japan tourist mobile data

What’s the best tourist SIM card for Japan (2024 guide)

By: Author Kris

Posted on Last updated: August 18, 2024

If you’re headed to Japan and want to stay connected while exploring, we’ve got you covered with the top tourist SIM cards. No need to worry about losing touch with your loved ones or missing out on those Insta-worthy moments.

We’ve spent a lot of time in Japan and traveled all over the country. The first trips we would very often come across a “Handy” phone in our hotel room – a phone we could use throughout our stay. But those days are long gone now.

Nowadays, if you want to stay connected, you better have a local SIM card if you don’t want to rely on public hotspots. And trust me, from experience, we can assure you that a local SIM card is still highly recommended.

There are several spots offering free internet, mainly in the larger cities, and handy apps to connect to WiFi hotspots for free. We share more information on this app in this article. Still, there are still plenty of places that require a data subscription for internet usage.

Whether you prefer the convenience of ordering physical SIMs online and picking them up at the airport or exploring the innovative world of eSIMs, there are numerous ways to ensure you stay connected on your journey.

Keep scrolling for the best options!

This post contains affiliate links. If you click one of them, we may receive a small commission (for which we are deeply grateful) at no extra cost to you.

Table of Contents

In a hurry? Our picks for the best Japanese SIM cards

Here are our top picks :

• Mobal Data SIMs : These SIMs are great for data-hungry users. Mobal has unlimited data plans with a very reasonable fair usage policy. You don’t have to worry about data speed and can be online the whole day.
• Mobal Voice + Data SIMs : If you need a Japanese Phone number to make voice calls or to use some specific Japanese apps.
• Sakura Data SIMs : Sakura SIMs, ordered through Klook, are the price-conscious option. They are cheaper than Mobal but have a stricter fair usage policy.
• Simcardgeek Esims : If your phone supports eSIMs this is the best and easiest way to go
• Airalo eSIMs : The cost-conscious option in the eSIM department for those who don’t need huge data packages.

Want more information on eSIMs? Skip to the eSIM section in this article . For a more extensive comparison of eSIMs, we would like to refer you to this article .

Japanese SIM cards

Japan Tourist SIM cards

Will you be in Japan for more than 3 months?

Mobal also has a long-term plan that does not require any paper contracts or other red tape.

Discover great apps for traveling to Japan. 

Japan Tourist SIM cards – The top choices

In this article, we discuss no less than 30 different Japan tourist SIM cards.  All of which have slightly different options.  It’s good to have a choice but with all these different options it is hard to see the forest for the trees.

We discuss all the details of the SIM cards further down in this article but here are our top choices:

For the occasional data user

Most SIM cards offer unlimited data but all providers have implemented a fair usage policy. If you consume more than what is covered by the fair usage policy your data speed will be reduced. Sakura Mobile cannot share the exact details of the fair usage policy, therefor we recommend them for occasional use. Their prices are very competitive but they cannot be used for video streaming or as a hot spot for your laptop.

If you just want to make sure that you can fall back on your data plan if you need it but you already know that you will only have to use it occasionally, these are your best options.

Short stays

At JPY ¥4,000 for 8 days the SIM cards provided by Sakura Mobile are reliable and very cheap. 

The SIM card offers unlimited high-speed data at 4G or 3G speeds.  You will find a very detailed document to check if your mobile is compatible with the local network. Sakura Mobile uses the NTT Docomo network in Japan, generally seen as the best network in the country.

Thanks to the detailed information you can buy this SIM with peace of mind, knowing that it will work once you are there. If you’re still unsure you can pay a supplement for compatibility insurance. With this insurance, you will receive a WiFi device in case the SIM does not work in your phone.

Alternatively, if your phone is incompatible (see our FAQ below) with the NTT Docomo network you can opt for a Mobal SIM that works on both the NTT Docomo and the Softbank network.

Click here for more information and to order your Sakura Mobile SIM card from Klook: Sakura Mobile Tourist SIM

Longer stays

If you are 2 of 3 weeks in japan.

For stays of 2 or 3 weeks , you’re in most cases also best off 16 or 21-day cards of Sakura Mobile that can be found on Klook.  At JPY ¥6,000 and JPY ¥6,500 they are the cheapest options that can be found for these durations.

Both SIMs offer unlimited high-speed data at 4G or 3G speeds.  4G is offered in major cities while the 3G is applicable in more rural areas. You will find a very detailed document to check if your mobile is compatible with the local network. Sakura Mobile uses the NTT Docomo network in Japan, generally seen as the best network in the country. It has a coverage of over 99%.

Once you have read through the detailed information you can buy this SIM with peace of mind, knowing that it will work once you are there.

If you’re still unsure you can pay a supplement for compatibility insurance. With this insurance, you will receive a WiFi device in case the SIM does not work in your phone.

Alternatively, if your phone is incompatible with the NTT Docomo network you can opt for a Mobal SIM that works on both the NTT Docomo and the Softbank network.

If you are longer than 24 days in Japan

If you will be in Japan longer than 24 days the 30-day card of Simcard GEEK that costs JPY ¥4,980 is a good buy.  The card comes with 7GB of high-speed data which should be sufficient to cover your needs.  This SIM card also connects to the NTT Docomo network which is generally recognized as Japan’s best network.

Simcard GEEK has a fair usage policy of 3GB/day.

Click here for more information and to order your SIMcard Geek SIM card: SIMcard Geek 30-day Tourist SIM

For the heavy data user

If you want to be online the whole day,  enjoy streaming music, or watch YouTube videos, you’re better off with the below SIM cards.  This may also be the case for those who will be sharing your data plan with friends or family members, maybe by means of a mobile WiFi device.

These SIMs also have a fair usage policy. In this case, however, you know the details of the policy and can therefore pay attention to it so that you are not faced with surprises.

Mobal offers SIM cards for 8 or 16 days with an unlimited data plan .  The cards have a fair usage policy which limits high-speed data to 3GB per day. 3GB is quite a lot, it will allow you to browse the internet for 36 hours, stream 600 songs, or watch 6 hours of standard definition video. 

Consuming this amount of data in one day would probably mean that not much time is left to see the many stunning sights Japan has to offer.

Click here for more information and to order your Mobal SIM card: Mobal Tourist SIM

Mobal has a SIM with an unlimited data plan for 31 days.   This card has a fair usage policy which limits high-speed data to 3GB per day. 3GB is a lot, in the previous paragraph we gave a small overview of what exactly you can do before you reach this threshold. 

If you go out and discover the city you will probably never consume that much data in one day and if you stay in your hotel you can use the WiFi provided by the hotel.

Japan SIM card for tourists – The details

Mobal is a company with a mission to help international travelers in Japan stay connected.

They’ve got offices in New York and the UK, so if you need any help, you can count on them to provide support in English.

Whether you’re staying for a short while or a long time, they’ve got data and data+voice options to keep you connected.

What we like most about them is that their website has all the info you need and they’re super quick at getting back to you when you reach out. When we once had a question we heard back from them within just two hours!

Size : Multi-size SIM cards.  The SIM can be adapted to fit in any mobile phone.

Network :  NTT Docomo, Softbank (3G & 4G)

Shipping :  Shipping is always free.  Data-only SIMs are shipped worldwide, for data+voice+text SIMs the list of countries is limited .  If shipping is not available to your country you can simply collect your SIM, for free, at one of the many pick-up locations.  There are locations at the airports and in Tokyo, Osaka, Kyoto and other major cities across Japan.

Below are the shipping times.

Japan: 1 – 3 business days USA and UK: 2 – 5 business days (expedited, next business day, shipping to these countries is available for a fee) Other countries: 8 – 15 business days

Shipping of voice+text sims requires that a copy of your ID is to be sent to Mobal at the time of your order.  All details about shipping and pick-up locations are extensively explained on the website .

Activation : No activation is required for these SIM cards. They’re ready to use. You just need to insert the SIM and set the APN.

Topping Up : Data only SIM’s have unlimited data at 4G LTE speed.  Data+voice SIM’s have 7GB of data at 4G speed per calendar month.  This can work in your favor.  If you arrive on 23 October, and stay until 7 November (as an example) you will get 14GB of data. 7GB in October and a new bundle of 7GB as soon as November starts.

If you want more data at high speed you can top-up your account in your online account.

Fair usage policy : If you use more than 3GB in one day your data speed may be reduced to 128 kbps for 24 to 48 hours.

Click here for more information and to order your Mobal SIM card: MOBAL Tourist SIM

Simcard Geek

Simcard Geek is a sister company of Mobal. Despite being powered by Mobal they have a different product range than what you can get from Mobal directly.

Network : NTT Docomo (3G & 4G)

Shipping :  Shipping is always free and is available to your home or your accommodation in Japan.  You can also choose to pick up your SIM at any of the postal offices at the airports in Japan.

SIM cards are sent out a few weeks before your pick-up date.  If you order your SIM long in advance it may not directly be shipped.

Japan: 2 – 5 business days (expedited shipping is available for a fee) USA: 2 – 5 business days   UK: 2 – 5 business days (expedited shipping is available for a fee) Australia: 3 – 7 business days   Other countries: 8 – 15 business days

Pick-up at the airport in the postal office: your SIM will be ready for pick-up after 2 to 5 business days or 2 to 3 business days with expedited shipping.  Make sure to verify that the postal office is open at your arrival time.

Activation :  The Japan SIM card is active upon receipt. To start using your SIM you simply can follow the instructions in the supplied English user guide to enter your APN settings.

Fair usage policy : Unlimited SIM cards have a fair usage policy.  If you use more than 3GB in one day your data speed may be reduced for 24 to 48 hours.

Click here for more information and to order your SIMcard Geek SIM card: Simcard Geek Tourist SIM

Sakura Mobile

Sakura Mobile is a reputable Japanese company that specializes in providing wireless services for visitors to Japan. They offer a range of affordable solutions to keep you connected throughout your stay.

They offer English support. Our support question was answered quickly, correctly, and in clearly understandable English.

One standout feature of Sakura Mobile is its compatibility insurance option. For an additional fee of 500 JPY, you can add this insurance to your purchase if you’re unsure whether their SIM will work with your device. This provides peace of mind and ensures that you’ll be able to stay connected without any hiccups.

In the unlikely event that you do encounter connectivity issues, Sakura Mobile offers a solution to those who took the insurance option – an upgrade to a Pocket Wi-Fi device at no extra cost. Alternatively, if you prefer, they can also provide a refund.

You have multiple options when it comes to ordering Sakura Mobile SIMs. You can either purchase them through Klook or directly on their corporate website . While the widest range of options is available on their own site, it’s worth noting that Klook offers certain exclusives not found on the corporate website.

On the other hand, when ordering directly, you can choose from more pick-up locations or have the SIM shipped to any address within Japan, including hotels.

Size : Multi-size SIM cards. Normal, Nano or Micro sim.

Network :  NTT Docomo (3G & 4G)

Shipping :  When you order through Klook the SIM can be collected at Terminal 3 (the International terminal) of Haneda International Airport or Terminal 1 and 2 of Narita International Airport. There is also a pick-up location in the arrival lobby of the Kansai airport.

If you order direct you can have the SIM delivered to hotels and Airbnb’s or collect it at the airport (Haneda, Narita, Kansai, Chubu, New Chitose) or at the office in Shinjuku.

Activation : No activation is required for these SIM cards. They’re ready to use. You just need to insert the SIM and set the APN.  You can download a document that explains how to do this.

Available direct :

Available through Klook :

Click here for more information and to order your Sakura Mobile SIM card:

Japan SIM cards with pick-up abroad (via Klook)

Here are a few extra options for those who live in Thailand, Malaysia, Hong Kong, Vietnam or India.

The below providers offer SIM cards that are either shipped to your home or that can be collected at your airport of departure.

Personally I would prefer to pick-up my SIM in Japan.  This has the advantage that somebody can assist you with setting it up and in the unlikely event that it doesn’t work, you would be able to look for an alternative or arrange a refund on the spot.

A pick-up abroad might, however, be a convenient option if you don’t want to lose time collecting your SIM upon arrival.

Buying a SIM card in Japan

Don’t worry if you’re already in Japan when you’re reading this. 

It’s also possible to buy a tourist SIM card in BIC Camera and Yodobashi Camera stores as well as at Narita and Haneda airports. 

You can even order one online and pick it up in several locations in downtown Tokyo, Kyoto, Osaka as well as other cities.

At the airport

If you want to start using your SIM card immediately you can buy one at the airport.

In the arrivals hall are sales counters from various operators and they will certainly be able to assist you in English. 

The drawback is that your choice will be more limited than in the shops in the city and you will be paying more, as is always the case at airports.

BIC camera also operates one small store in Narita and 2 in Haneda airport terminal 3 (see here and here ).  The sales points from the operators will likely be able to better assist you and give you advice while the stores from BIC camera will likely be cheaper.

In the cities

Another option to buy a SIM card in Japan would be to head to one of the BIC Camera or Yodobashi Camera stores in the cities. 

They sell various prepaid SIM cards for Japan tourists.  Usually, someone will be able to assist you in English but don’t expect the store personnel to speak the same level of English as they would at the airport. 

If you know what you need they will be able to point you to the correct package or confirm that what you picked is what you think it is. But you better speak some Japanese if you want to go into lengthy discussions about what would be the best option for you.

Finding these stores is easy.  Your hotel should be able to tell you the nearest one or you can use Google Maps.

A visit to a BIC Camera or Yodobashi Camera store is something that we absolutely recommend.  It is a fun experience during which you can marvel at all the electronic gadgets that are for sale.

But maybe you prefer to compare the various options from the comfort of your hotel room.  This is possible as well. 

You can order your SIM online with Mobal and pick it up directly at one of the many pick-up locations across Japan.

They have a very informative website and offer English support in case you have any additional questions. 

Japan eSIMs

Good news if you have a modern phone that supports embedded SIMs (eSIMs). You no longer have to worry about fiddling with your phone to replace the SIM card. All you have to do is click a link or scan a QR code.

Your SIM can stay in your device and you can switch between your own cellular plan and the Japanese plan. Super convenient and super easy.

Four providers offer eSIMs :

Simcard GEEK

Airalo esims.

Airalo eSIMs are available for a duration of 7 or 30 days and come with a data package ranging between 1 GB and 10 GB.

These are data-only contracts so voice calls are not supported.

• Size: eSIM card.
• Network: Softbank
• Duration: 7 or 30 days
• Pick-up: You will find all the information in the e-mail or the app.
• Activation: You can activate the eSIM when you want to start using it. You will need a WiFi connection to activate it.
• Topping Up: You can buy a new SIM if you’ve consumed all data of your existing eSIM.

Use our exclusive   WAPITI10OFF promo code to get an additional 10% off your Airalo eSIM.

Check all Airalo eSIM options: Airalo eSIM

The activation link is sent minutes after your purchase so you can still buy this SIM after you’ve arrived in Japan.

Check out this list if you’re not sure if these eSIMs are compatible with your phone.

The eSIMs connect to Japan’s Docomo network and is native to Japan. It connects to the Docomo network directly and is fast & reliable. You don’t need to enable data roaming for it to work.

The SIMs are data only, voice & text is not supported.

These are the various options:

Click here for more information about the Simcard GEEK eSIM options: Simcard GEEK eSIMs

In addition to the regular SIMs that we discussed above , Mobal also offers a selection of eSIMs.

Their eSIMs make use of the Docomo network and are native to Japan. All the options are data only, voice & text is not supported.

The data speed is 4G LTE. If the included data amount is fully used you can continue surfing until the SIM expires but at a slower speed of 200 kbps.

Click here for more information about the Mobal eSIM options: Mobal eSIMs

Frewie offers 2 eSIMS for use in Japan. When ordering a Frewie eSIM through Klook you will get a confirmation mail with a QR code to activate your eSIM. The mail is sent within 24 hours of your purchase.

The Frewie eSIM is a data-roaming SIM that connects to the Docomo network in Japan. It’s not a native Docomo eSIM, you will need to activate data roaming for it to work. Because it uses roaming it can be somewhat slower than the above eSIM options from Simcard GEEK.

One SIM works only in Japan, the other works in Japan & South Korea. Both are data only. The data package varies with the duration of the SIM.

Check prices and more info:

Frewie Japan SIM (5 – 30 days)

Frewie Japan & S-Korea SIM (14 or 30 days)

Japan SIM card for longer stays

For a short stay, you’re best off with a prepaid SIM card but if you’re staying in Japan for several months you could consider an unlimited long-term plan.  

Japanese providers are known to have a lot of red tape.   

A contract with them usually requires a lot of paperwork and a commitment of 2 years. For some, you even need to have a residence visa and/or a Japanese bank account.

Two providers offer long-term SIM plans :

Mobal offers an alternative to the red tape. 

Their long-term plan comes with no minimum duration, no activation, and no termination fee. 

The customer service team speaks English, is super-responsive, and you can easily order the SIM card online.

This is what you will get:

Japanese Phone number : A real Japanese phone number starting with 070, 080 or 090 (Softbank).  A voicemail service is included.

Free calls : All incoming calls and texts are free. Outgoing calls to other Softbank customers (including Mobal customers) are free from 1 AM to 9 PM.

Network : Your Mobal SIM will give you access to both the NTT Docomo network as well as the Softbank network so you’re sure to have the best reception whenever possible. The sim can be used in any unlocked device that supports the 3G or 4G Band 1 (2100MHz) frequency.

Shipping :  Shipping is always free but not available to all countries.  If shipping is not available to your country you can simply collect your sim for free, at one of the many pick-up locations.  There are locations at the airports and in Tokyo, Osaka, Kyoto and other major cities across Japan.

Shipping of voice+text sims requires that a copy of your ID is sent to Mobal at the time of your order. 

If you don’t want to share these details online you can pick up your package in Japan. All details about shipping and pick-up locations are extensively explained on the website .

Activation : To activate your SIM follow the activation instructions provided with your sim.  During business hours the activation should be processed within 2 hours.

Upgrade data plan : The data+voice SIM has 7GB of data at 4G speed per calendar month.  If you want more data at high speed you upgrade your plan in your online account.

Fair usage policy : If you use more than 7GB in one month your data speed will be reduced to 128kpbs for the remainder of the calendar month.

Click here for more information and to order your Mobal SIM card: MOBAL Long-term SIM

Sakura Mobile offers a similar long-term plan specifically aimed at overseas tourists who will spend a considerable time in Japan.

The plan has no minimum duration, it can be canceled at any time. There’s a one-time activation fee for the voice service. (only to be paid if you want to use the voice+text features) 

To order the package you will need to provide a copy of your current passport. A utility bill with your address on it is also required as proof of residence if you want the SIM to be shipped to your home.

Japanese Phone number : A Japanese phone from NTT Docomo.

Calls : All incoming calls and texts are free. With the Sakura Dail app or the special prefix number you can call at special discounted rates. ( check the rates )

Network : NTT Docomo.  There’s a dedicated page to see if your device is compatible.

Shipping :  The SIM card can be shipped to your home address if you provide a proof of residence.  This is not required.  You can also collect it at the airport or in the Sakura Mobile office.

Normally it takes 2 to 5 days for the package to arrive. You will receive a tracking code with which you can track the shipment.

Activation : No activation is required for the data plan. A one-time fee of 5,500 JPY is required to activate the voice service.

Data plan : You can choose from 2 plans.  A lite plan with 4GB data/month or a premium plan with 25GB data/month.   Both plans are unlimited which means you can continue browsing at slower speeds if you’ve consumed the included data.  It’s also possible to top-up your data plan online.

Fair usage policy : Unknown

Click here for more information and to order your Sakura Mobile Long-Term SIM card: Sakura Mobile Long-term SIM

FAQ About Tourist SIM Cards for Japan

Will your phone work in japan .

Before you buy a SIM you need to be sure that your phone is compatible with Japan’s telecom network. It needs to be able to operate on one of the bands used by the telecom operators in Japan. 

Check the technical specs of your phone to see what bands are supported and see if there’s a match with the bands that the operators are using. We’ve listed all of them in the following section.

Your phone will also need to be unlocked.

If you don’t want to do this manually you can find pages online ( like this page ) where you can select your phone and the network operator to verify if they’re compatible.

Network providers in Japan

Japan has four mobile phone companies that operate their own network.  The three major players are NTT Docomo, Softbank (formerly Vodafone), and Au by KDDI.

A fourth challenger is Rakuten Mobile. Rakuten Mobile used to be a virtual operator but started building out its own network a few years ago. Today it covers about 94% of the population.

All other operators are virtual and use one of the existing networks. The tourist SIM cards we discussed in this article all work on either the Softbank or NTT Docomo network.

The network of NTT Docomo is recognized to be the best in terms of coverage.  Softbank comes in second although they are not far behind. Both these networks cover 99% of Japan (population-based).

These are the bands used by the Japanese operators:

Rakuten Mobile

Pocket WiFi device vs Tourist SIM card

One big perk of using a pocket WiFi device is that you can stay connected without having to mess with your phone.

No need to worry about changing your settings. Just remember to turn off your data connection to avoid those annoying roaming fees. With your SIM card still in the phone, you can stay connected with friends, family, work buddies, and anyone else who has your number just like you’re back at home.

If you want people to be able to contact you anytime, a pocket WiFi device is a great option.

Another advantage of pocket WiFi devices is that they let you connect multiple users at once (usually up to 10!).

Batteries of pocket WiFi devices usually last no more than a day. This is probably the biggest disadvantage. It is one more device that you need to charge on a daily basis.

Interested in Pocket WiFi devices?

See which ones you can rent in Japan . Or if you are going to use this often, you can buy your own device , just like us.

Which size of SIM card do you need

SIM cards have become increasingly smaller over the years. First, we had the standard SIM, then the Micro SIM and nowadays almost all modern phones use a Nano-SIM

Usually, providers use multi-size (3-in-1) SIM cards that are compatible with all phones.  Others only offer 2-in-1 (Micro and Nano) which means they will still be compatible with most current models. 

The technical specs of your phone will show what SIM you need.

In some cases, you will need to specify the requested SIM size with your order.

Free WiFi in Japan

You can easily find free WiFi at many places in Japan. Coffee shops like Starbucks, metro stations in all major cities, and JR train stations offer this convenient service.

Connecting to public WiFi networks was a pain the first time we were in Japan. Not only did we, have to do it over and over again. We also couldn’t get the connection to work for half of the time.

But now there’s a great app called Japan WiFi Auto-Connect that takes care of all the hassle for you. It automatically connects your phone to selected public WiFi hotspots. Only the trusted ones managed by reliable companies or authorities are used by the app for security reasons.

The app worked perfectly for 90% of the time during our last trips. Whenever we walked into a metro station or train station the phone usually connected to the WiFi in a matter of minutes.

The Japan WiFi Auto-Connect app is available for Android and Apple and makes free WiFi much more reliable for foreigners.

Still, I suggest not depending on free WiFi entirely, just like we don’t. As you move away from the big cities, finding reliable Wi-Fi spots becomes harder.

And even in the major cities, I find it super handy to have internet access all the time so I can look up stuff whenever something pops into my head – not just when I stumble upon a hotspot.

It’s a matter of convenience, but SIM cards are so cheap that I think it’s worth it.

Having a Japanese tourist SIM card turned out to be priceless.  With Google Maps we could easily find our way around the cities, we discovered interesting places to eat and we weren’t restricted to touristic restaurants since we could use our mobile phone to translate the menus.

It really helped us to travel deeper and get a better, less touristy experience of Japan.

There’re many different tourist SIM cards so we wrote this post to help you choose the one that suits your needs.  All information is accurate at the time of writing.

We will regularly update this article but if you notice any changes we would appreciate it if you let us know so we can update our post.

Enjoy Japan!

• Tokyo Cheapo (繁體中文)

The Best eSIMs for Visiting Japan — Tested and Compared

Japan esims tested and compared.

First, here’s a summary of what we found when we tested the eSIMs (updated September 2024):

If you’re curious, here’s how we tested the Japan eSIMs .

What exactly is an eSIM?

It’s a virtual SIM that you can download and install onto your phone directly, so no more fiddly physical SIM cards. Most phones released since 2019 can use an eSIM, with Apple’s US iPhone 14 and 15 being eSIM only. eSIMs are convenient when you want to change your carrier, such as when abroad, as you can connect to a new provider in seconds without removing your existing physical SIM card.

Japan eSIMs for tourists and short-term visitors

Here’s a quick overview of some of the Japan eSIM options for your trip. This is not an exhaustive list; just an introduction to some of the main players in the market.

Best eSIMs for short trips

These are the providers with a big range of shorter plans:

eSIM Japan: Flexibility from short stays to unlimited data

eSIM Japan has among the most extensive plans for travelers to Japan. Their plans are broken into three basic types: Unlimited data 3–30 days, 5G Unlimited Max 3–15 days, and fixed-data 7–30 day plans. The unlimited data 3–30 day plans have 1GB per day and 2GB per day options, and you can select from nine different trip lengths. All of their plans score fairly highly in terms of affordability and speed.

Installation

When we ordered the 2GB/day Japan Unlimited Pro eSIM, a QR code arrived in our inbox immediately. From purchase to use, it took less than 15 minutes.

The plan begins when you scan the code and install the eSIM. Plans have a set time limit and a data limit (3GB, 5GB, 10GB, or unlimited), so you can choose a plan that works for the length of your trip.

Performance

eSIM Japan is provided by China Mobile Hong Kong but roams to Japan’s KDDI au network (you’ll need to enable roaming to use it). Despite roaming, it was fairly fast, with an average download speed of 38.27Mbps. Websites loaded in a flash, and video calling and streaming were smooth, with no lags.

Note: If you are in Hong Kong or Taiwan, you’ll need to use real-name registration. Otherwise, no signup is required.

World eSIM: Reliable speeds and connectivity

World eSIM is brought to you by Vision Inc. — the folks behind well-known travel Wi-Fi name Ninja Wifi . World eSIM provides three different types of packages – unlimited, fixed, and daily data plans. Unlimited plans range from 5–30 days, daily data plans are 3–15 days, and fixed data plans include 5, 10, and 20GB options. Their eSIMs ranked reasonably high in our speed tests, and their plans are affordable per gigabyte.

Getting our eSIM was straightforward. After signing up on the World eSIM website, we paid and received a QR code instantly in our email. A quick scan, and we were ready to go.

Download speeds averaged 99.15Mbps, and streaming was smooth. During our test, we found that this was one of the best eSIMs for video calling. Overall, it’s a solid choice.

Best eSIMs for long trips

When you want a big range of options for 30-day eSIMs and bigger data caps:

Mobal eSIMs: Big data limits and voice + data plans

Mobal’s short-term data-only plans come in 8-, 16-, and 31-day durations, with data limits ranging from 3–100GB. The short-term voice + data sims are also available for 30, 60, and 90 days, although data limits on these plans are capped at 7GB per calendar month. If you’re after a more long-term voice + data option, plans are also available with monthly fees for 1, 5, 10, or 30GB of data per month (see below). 

Activating the data SIMs takes about 15 minutes. After 5 minutes, we received an email with a link to their service website. This led us to a page where we waited for our eSIM QR code to be ready for another 10 minutes.

In terms of performance, Mobal is about the middle of the pack, at an average of 24.76Mbps. Websites loaded quickly, and video calling was fairly smooth. Overall, it’s a solid, reliable eSIM.

Mobal long-term voice + data eSIM for Japan

There is also a voice + data eSIM , which has an initial fee of ¥ 2,970 . When you activate your eSIM, you’ll need to choose a monthly plan, ranging from 1GB/month for ¥ 1,650 to 30GB/month for ¥ 4,378 . There is no minimum contract period or cancellation fees, making it a viable choice for travelers and residents alike. You get a real Japanese phone number with this eSIM. We tested out the 7GB plan.

Note: Due to regulations in Japan, the voice + data eSIM cannot be emailed to customers; your access code will need to be posted to your residence overseas or otherwise picked up in person in Japan. You must apply in advance, upload an ID document, and wait for a delivery. Once you get your package in the mail, you need to activate your Mobal eSIM on the Mobal website. You’ll enter a 32-digit EID, then wait for Mobal to activate your eSIM and provision your new Japanese phone number. Technical support is available via email and a web form, though most questions can usually be solved by having a peek at Mobal’s FAQs page.

Saily: Excellent value for 20GB

Saily offers straightforward eSIM plans in 7- and 30-day options. The 7-day option offers 1GB of data, while the 30-day options range from 3 to 20GB. Price-wise, the 20GB Saily eSIM for Japan can’t really be beaten. Saily comes from the well-established tech company NordVPN , and uses UK network 1GLOBAL, with local roaming via NTT Docomo.

Our Saily eSIM was ready for download instantly, and activation was foolproof with their dedicated Android/iOS app, which walks you through the set-up process.

Speed-wise, Saily performed well with a strong 5G signal at most of our testing locations; video streaming and calls were flawless.

Ubigi: Fast speeds for long stays

Ubigi is a global eSIM provider currently offering eSIMs for over 200 destinations. A relatively new name in the Japanese eSIM market, they nonetheless have plans to cover most needs. From economical single-day 500MB plans for ¥ 390 to beefy month-long plans with unlimited data for US$ 74.00 , there’s something for all travelers.

Ordering from Ubigi is a snap. Once we paid, a QR code was emailed to us in seconds. One quick scan, and we were ready to go. Like most others on this list, Ubigi works with NTT Docomo for reliable coverage across Japan. The company behind Ubigi is Transatel, which is actually owned by NTT.

We tried the 3GB Ubigi eSIM. In our testing, we experienced average speeds of 73.72Mbps and web pages loaded in a flash. YouTube playback was smooth with no buffering, and our video calls were lag-free. Ubigi’s excellent quality and speed make it a strong contender at this price point.

Airalo: Lightning speeds from a trusted brand

Special offer: Order through our link and get 10% off . The discount is automatically applied at checkout.

If you’re in the market for speed, Airalo isn’t going to play games with you. Airalo eSIMs roam to both KDDI au and SoftBank, two of Japan’s major carriers, offering dependable data on the go. Their Moshi Moshi eSIM line of eSIMs has 7, 15, and 30-day packages. The 7-day package is the bare minimum, with only 1GB of data for US$ 4.50 . The 15-day plan offers 2GB; at the upper end, the 30-day plans come in 3, 5, 10, and 20GB increments. For those of you who burn through your data, that 20GB package will set you back US$ 26.00 .

Getting the Airalo eSIM took no time at all. We signed up for the 2GB/15-day Moshi Moshi eSIM, and after paying, we were immediately taken to a page with our eSIM QR code waiting. We were 100% good to go within 15 minutes. Note that sign-up is required for this eSIM.

When it came to our speed test, this eSIM left all of its competitors in the dust. Our testing had a lightning-fast average download speed of 141.61Mbps. Websites loaded almost instantly, and YouTube videos didn’t stop to buffer once. Even our awkward video calls didn’t make this eSIM break a sweat. If you’re the sort of person who works your data to the bone, Airalo is a good choice.

Best eSIM for (very) light data use

The best option for low MBs:

GigSky Japan eSIM: Fast speeds and reliable connectivity

GigSky currently offers seven eSIM data plans for Japan. The five fixed data plans range from a free 100MB, 7-day option to 10GB for 30 days. The two unlimited options include 7- and 15-day plans. In addition to the Japan-specific data packages, GigSky offers regional Asia Pacific plans, a World plan, and a range of Cruise + Asia Pacific plans.

You’ll need to create an account to purchase a GigSky eSIM. Unlike other providers, we found the process relatively quick and easy through the GigSky app. Once you’ve created an account, choose your plan via the app or website. From there, you can quickly install your eSIM by scanning the QR code in your email inbox or doing it automatically through the app. If you’re using the app, you can also monitor data usage and top up your plan if required. 

Whilst the free 100mb was very slow, GigSky’s paid Japan eSIM ranked among the highest in our download speed tests. During our eSIM testing, we automatically connected to NTT Docomo networks. As one of Japan’s most prolific networks, you should receive reliable connectivity in most parts of the country.  

Best eSIM for families and groups

For sharing data with your travel squad:

Flexiroam Japan eSIM: Great for groups

Flexiroam offers six fixed-data plans and six unlimited data plans across their Japan eSIM range. Fixed data plans include four 30-day eSIMS of various data limits, and two shorter 7-and 15-day options. Flexiroam’s unlimited plans are staggered from 5 days up to 30 days. The Japan eSIMs roam to all of Japan’s major networks, and their fixed-data plans offer the option to distribute data to friends and family, and also roll your data over to additional plans. 

You’ll need to create an account to purchase and install your eSIM. While it’s not a requirement, we found it was easiest to buy through the Flexiroam app. Through the app or the website, you choose your trip destination, usage (fixed or unlimited data), and trip duration, and you’ll be presented with the available options. From there, select the plan you want and enter your payment details.

You’ll receive a QR code and instructions via email to set up your eSIM. You can install your eSIM using the QR code or through the app, but we found the QR code easier. Depending on your phone, you may need to update the APN settings for the eSIM to work. As per the website, the eSIM can take around 15 minutes to connect to a local network for the first time after installation. 

Flexiroam’s website says that its eSIMs automatically connect to the strongest signal from the available local operators. While its website doesn’t transparently list its partner networks in Japan, we were able to manually connect to two of Japan’s major network operators (Docomo, NTT, and Softbank) during our tests. In terms of speed, Flexiroam ranked around the middle of the pack during our tests.

Best eSIM for flexible plans

When you want heaps of options for days, data, and top-ups:

Sakura Mobile: Trusted local Japan provider

An established SIM and Wi-Fi provider popular with both short and long-term visitors to Japan, Sakura Mobile also has a line of eSIMs. A big selling point of Sakura’s Travel eSIMs is their flexibility. Short-term eSIMs are available from 1 all the way up to 90 days with a combination of unlimited and fixed-data options. If you’re after a semi-permanent option, Sakura offers long-term data-only and voice + data eSIMs at 5, 25, and 40GB per month.

We tested the 3-day, 3GB data-only eSIM, which cost ¥ 2,750 . There was no option to install it directly through the Sakura Mobile website; the QR code and instructions were emailed to us. The user interface was clunky, but the eSIM was set up in under 15 minutes. We didn’t need to activate roaming to use it.

In terms of performance, Sakura Mobile’s download speeds averaged 84.46Mbps, although they varied significantly across test platforms. Video playback and calling were smooth, though, and we were satisfied with the overall performance.

eSIMs with unlimited data

From the names mentioned above, eSIM Japan, Ubigi, Sakura, World eSIM, Gigsky and Flexiroam all offer unlimited data plans.

eSIM companies are increasingly offering different types of unlimited plans for heavy data users such as business travelers and remote workers. For a breakdown of some of the unlimited providers out there, see our dedicated comparison of Japan eSIMs with unlimited and nearly unlimited data .

Japan eSIM FAQs

How much data do i need.

Average users in their home country will use around 5GB per week. When you’re at home, though, you’re probably connected to Wi-Fi for most of the day. When traveling, chances are you’re connected to Wi-Fi a lot less. You’re relying on data for things like maps and translation, browsing for things to do and places to go.

500MB – 1GB per day might be enough if you’re just using your data for things like maps and instant messaging while you’re out. But if you’re on your phone during a long Shinkansen trip, using data for work, tethering, or spending a lot of time on social media, you might want to consider the higher end of the spectrum.

If you’re worried about going over your daily data limits, consider downloading offline maps and saving most of your heavy data usage for when you’re on Wi-Fi. Also, consider setting a data warning on your phone. Alternatively, consider plans that offer data top-ups. 

Is my phone eSIM compatible?

This is important to check before handing over your money! While most phones made in the last few years or so will have eSIM functionality, not all phones will be unlocked. If you purchased your phone outright, chances are it’s unlocked. If, on the other hand, your phone came under a contract with a network provider, chances are your phone will be locked by that provider.

Checking whether your phone is unlocked is pretty quick and easy. If you discover that your phone is locked, check with your service provider to see if it’s possible to unlock it before buying an eSIM. Alternatively, if you’re traveling with family or a small group, consider renting a pocket Wi-Fi device to share.

What’s the best eSIM for skiing or snowboarding in Japan?

Two things to consider when on a ski trip in Japan are connectivity and the ability to make emergency calls . If you’re heading to Nagano, Hokkaido, or Niseko, then you’re going to want a service that has reliable connectivity in remote areas.

NTT Docomo is often regarded as the best provider in regional areas because of its overall network coverage — so an eSIM that connects to Docomo’s network would be a good choice when heading to the snow. Secondly. if you prefer not to rely on apps like Skype for emergency voice calls, look for a provider that offers a combined voice + data package, like Mobal . If you’re in an emrgency in Japan, the number to dial is 119.

What’s a Fair Usage Policy?

This is probably something you’ll see pop up quite a bit while researching eSIMs, and it’s worth noting, especially if you’re looking at unlimited data options. Many “unlimited data” plans are actually capped at around 2 to 5GB per day, with speeds throttled after you hit the daily limit.

In slightly rarer cases, providers will offer “truly unlimited” plans with no apparent daily data limits. However, remember that these may ultimately be bound by Japan’s nationwide Fair Usage Policy (FUP). Japan’s FUP basically says that to provide equal internet access to all network users, everyone should use the internet reasonably. If a user is deemed to be using excessive data, networks may implement the FUP and throttle their internet speeds. This means that although you might have purchased a truly unlimited data plan, be careful of using much more than 2 or 3GB per day, as there’s a chance that your speeds will slow to a grinding halt until at least the next day.

Which network offers the best coverage in Japan?

In general, NTT Docomo is said to have the most infrastructure nationally. Still, there isn’t a clear objective winner regarding overall quality between the three primary players, Docomo, AU, and Softbank.

A recent study awarded Docomo the best in general availability, but AU and Softbank both lead in 5G coverage. Similarly, although Docomo is said to have the largest network, it also has the biggest user base. This means that it may be slower in crowded areas but may perform stronger in more rural areas.

Which Japan eSIM is the fastest?

Airalo scored the highest in our speed tests by a solid margin at the time of writing, followed by Ubigi and World eSIM. Airalo runs on both Softbank and KDDI AU networks. Ubigi runs on NTT Docomo and World eSIM runs on Softbank. 

How easy is it to switch between eSIM plans during a trip?

If you have multiple eSIMs already installed, switching between different SIMs is quick and easy. If you’d prefer to keep things simple, some eSIM providers offer regional SIMs that cover multiple countries, such as Japan, Korea, and Taiwan on one SIM. 

Which is better for your Japan trip: An eSIM or a physical SIM card?

Even with more providers arriving on the scene, the options with physical SIMs are still superior to what you can get with eSIMs. For example, only one of the eSIMs listed here includes a Japanese phone number with calling ability (that’s Mobal ).

If you’d like something a little more inconvenient but with better options, check out our guide to prepaid SIM cards for travel to Japan . We also recommend taking a look at mobile Wi-Fi rental for Japan to compare connectivity options.

What’s the difference between international roaming eSIMs and local eSIMs?

Essentially, there are two types of eSIMs — eSIMs provided by foreign companies that roam to the local network, and eSIMs that are native to the country you’re in. Many companies that offer Japanese eSIMs are the former, essentially foreign eSIMs with agreements with local carriers like Docomo or KDDI that allow them to connect to their networks.

In terms of coverage, there aren’t any significant differences — foreign eSIMs will be roaming to the same networks that local providers use. There are some potential downsides to foreign eSIMs, though, including battery drainage caused by roaming, and slower speeds caused by latency. In most cases, these issues won’t be entirely noticeable, but may be things to consider when choosing your eSIM.

How we tested our eSIMs

We regularly test the providers listed above and report the average speeds over time based on all the tests. To perform the tests, we purchase an eSIM from each provider — the same as any customer would, and use the Ookla speed testing app. This app does a standard test to measure upload, download, and latency.

Speed results can vary based on several factors, so to get fair and realistic test results, we do the following:

• For each round of testing, we do tests from 3-5 different locations around the Tokyo greater area
• At each location, we perform the test twice for each provider and use the same model of smartphone
• We do a round of tests every 2-3 months, and so keep an average of the results from each provider over time
• We also do some random spot testing for general usage, e.g., doom scrolling social media, making short video calls to look for lag, etc.

If there are some anomalous results, we may retest the eSIMs on the following day, at a different location in Tokyo, to compare results. For example, on our very first round of testing, Mobal and Sakura Mobile experienced severe throttling on the initial test day. This was because we’d burnt through the daily allowance when figuring out how to do the tests! We could repeat the tests the next day when the allowance had reset.

Some eSIMs had to be run on the same device, meaning that not all tests were simultaneous. Our testing method isn’t perfect, but it does give us a good idea of the different eSIMs’ performance. We excluded some eSIMs from the article where we had concerns about the ordering process, performance, or pricing.

A word on speed tests: We strongly recommend not running speed tests with your eSIM, as they BURN through data. A single test could use 300MB or more!

While we do our best to ensure everything is correct, information is subject to change. Prices are approximate. This post was first published in October 2020 and was last updated by Patrick Balfe in September 2024.

閱讀中文版本: 日本 eSIM 推薦大集合 – 實測比較一覽

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Best 6 eSIM and 7 Physical SIM Card Providers in Japan 2024

Published on 2024-01-19 by Sakura Mobile

Are you planning on making a trip to Japan?

While there, you’ll want seamless internet access to apps like WhatsApp, Google Maps, Google Translate, or Instagram without any issues.

However, choosing between eSIM & physical SIM options can be challenging. Lack of information might lead to: • Uncertainty about which type your phone supports. • Running out of data too soon. • Difficulty setting up your eSIM or SIM card without prompt customer support.

Don’t worry — we’ve got you covered! Keep reading to learn the basics of eSIMs & SIM cards. We’ll cover everything you need to know for a short-term stay (under 90 days), including data plans, prices, setup guides, customer reviews, & the top providers.

A simple comparison table of eSIM, SIM Card, and Pocket WIFI

This article covers information on eSIM & SIM cards for short-term stays (under 90 days). Please refer to the article below for information on long-term SIM cards (monthly contracts).

• 8 Best SIM Cards in Japan | Cell Phone Plans for Long-Term Stay

If you already know which product you want, you can head straight to the information here!

• eSIM Information
• Physical SIM Card Information

Table of contents

• What is an eSIM?
• What travelers in Japan need to know about eSIM
• The best 6 eSIM for traveling to Japan
• Things to keep in mind when choosing an eSIM
• Introduction to Physical SIM Cards
• What travelers in Japan need to know about physical SIM cards
• Top SIM cards for Japan Travel
• Key Factors when choosing a SIM card
• eSIM and physical SIM card vs. Pocket WiFi: Which is Best?
• eSIM and Physical SIM card FAQ
• Final Thoughts

Too busy to read the article? Here’s a summary!

Japanese eSIM Providers

• Best : Sakura Mobile
• Runner ups : Ubigi, AIS SIM2Fly
• Others : Nippon SIM, eSIM Japan, Flexiroam

Japanese SIM Card Providers

• Runner ups : HIS Mobile, GENKI MOBILE
• Others : Any Fone JAPAN , b mobile , eConnect , SoftBank Global Rental

Click the image below to enlarge

1.　What is an eSIM?

eSIM stands for ” embedded SIM,” which means the SIM card is built into the device. Many newer smartphones and tablets now support eSIM. Unlike a physical SIM card, an eSIM doesn’t need to be inserted or swapped; you can set it up online. Before buying an eSIM, make sure your device supports it. For example, iPhone XS and later models (except those sold in Hong Kong) are compatible with eSIM.

Do you want to quickly check if your device is compatible with eSIM? If so, you can refer to the list in the article below.

TRAVEL eSIM COMPATIBILITY

↑ Go back to the table of contents

2.　What travelers in Japan need to know about eSIM

Before you use an eSIM for your trip to Japan, here are two things you should know:

How to Get an eSIM for Your Japan Trip

Are you thinking of buying an eSIM for your trip from one of Japan’s major carriers (docomo, SoftBank, or au)? Unfortunately, they don’t offer short-term eSIM plans.

But don’t worry! You can get one from a Mobile Virtual Network Operator (MVNO). They use major carrier networks to offer short-term eSIM plans.

Sakura Mobile is one such MVNO. Please read through this blog and choose the eSIM plan that meets your needs.

About eSIM with phone numbers

While some companies may offer eSIMs with Japanese phone numbers, providing Japanese phone numbers to non-residents is challenging due to stringent regulations and security concerns. Furthermore, they might not work correctly.

Data-only eSIMs, however, are an excellent option for short-term travelers since they do not have legal issues. Their internet access allows making calls and chat using apps like WhatsApp.

Most short- and medium-term tourists don’t need a phone number, but if you need one for work purposes or applications to government agencies, please refer to the article below.

How to Get a Japanese Phone Number

3.　The 6 Best eSIM for Travel in Japan

Scroll right for more →→

So, which provider should you choose?

Did this table help you understand more about which eSIM provider you should choose? Below, we will explain in more detail three companies that we highly recommend for your next trip.

Sakura Mobile

While Sakura Mobile’s eSIM isn’t the cheapest option, it offers flexibility and up to 200 GB of data. You can also top up your data and extend your usage as needed. When choosing a provider, Sakura Mobile stands out. Easy and Flexible with Travel eSIM

Let’s take a closer look at Sakura Mobile.

Comprehensive Plans

Sakura Mobile offers a variety of data plans, from 3 GB to 200 GB, with usage periods between 3 and 90 days. You’re sure to find a plan that fits your needs perfectly.

Year-round English Customer Support

Sakura Mobile’s English Customer Support is available 365 days a year. If you have any problems with your eSIM, you can quickly and easily get help.

High Customer Satisfaction Rating

Sakura Mobile’s website boasts over 3,000 positive reviews, making it one of the highest-rated and most reliable companies in the comparison table.

Japanese eSIM Provider

Sakura Mobile is a Japanese telecommunications provider that uses docomo’s network, Japan’s largest, to ensure high-quality communication. Besides offering a reliable network, Sakura Mobile is known for its exceptional and friendly customer service, a hallmark of Japanese hospitality. Additionally, with offices and stores in Japan, customers can easily access direct support from staff.

Sakura Mobile eSIM Reviews: What Customers Are Saying

While traveling in Japan, we have had customers who experienced frustration and stress while dealing with SIM cards and eSIMs. Although many companies in Japan offer similar telecom services, the same cannot be said for the English support and service that Sakura Mobile provides. Along with utilizing the largest telecom network in Japan, docomo, Sakura Mobile provides full English service from start to finish, helping customers with their orders and any technical issues that may ruin the trip. With support via phone, email, and chat, customers can enjoy their trip to the fullest without any worries and stress.

For real user feedback, please check the reviews from customers who have actually used Sakuramobile.

https://www.sakuramobile.jp/reviews/

Conclusion: Which eSIM provider should I choose?

4.　Choosing an eSIM: What to Know

eSIM Activation

In most cases, you can activate your eSIM by scanning a QR code provided by your service provider. This QR code is usually sent via email or can be found in the provider’s app.

Flexibility: Extending Usage, Cancellation & Refunds, Adding Data, etc.

Unexpected changes can happen when traveling. For instance, you might fall ill after buying an eSIM and cancel your trip, or a one-week business trip might extend to two weeks. Sometimes, you may also use more data than expected and run out.

Signal/Service Coverage

The eSIM providers featured in this article use Japan’s major carrier networks, covering 99% of the population. However, be cautious when using your phone in rural areas, mountains, or underground. If you are considering hiking in Japan, please refer to the article below. Docomo Coverage Makes Climbing and Hiking in Japan Easier

English Language Support

Running into connection issues or needing clarification on settings can be frustrating, especially in another language. Choosing an eSIM provider with English customer support can make your experience smoother.

Here are some key points to consider:

• Contact Methods: Choose a provider offering both email and phone support. This allows you to call for emergencies and email for non-urgent matters.
• Availability: Many eSIM providers are closed on weekends, which can be inconvenient if you need assistance. It’s best to select a provider whose customer support is available year-round, including holidays.
• Local Presence: If you prefer in-person communication, opt for a provider with a physical location you can visit.

5. Introduction to Physical SIM Cards

If your phone doesn’t support eSIM or you prefer not to switch your eSIM, don’t worry! You can always use a SIM card for your travels. Read on to learn how to choose the right physical SIM for your trip!

6. What travelers in Japan need to know about physical SIM cards

Where to buy a SIM card in Japan

You might think you can buy a SIM card directly from a major Japanese mobile carrier like docomo, au, or SoftBank. However, this isn’t possible. These carriers provide prepaid SIMs to retailers, and that’s where you can get one. One example of such a retailer is Sakura Mobile, as mentioned in this article.

How to use SIM card and Pocket Wi-Fi in Japan

About prepaid SIM cards with phone numbers

In Japan, prepaid SIM cards sold with a phone number are rare due to legal and security concerns. This means you can only apply for a Japanese phone number here if you have a residence card, which is impossible to obtain on a tourist visa. However, anyone can get a data-only SIM card, which lets you use messenger apps like WhatsApp to make calls.

In Japan, prepaid SIMs with phone numbers for travelers are rare, with only data-only SIMs typically available. 

These provide data but no phone number due to strict identity verification laws, which restrict phone numbers to residents. Providing phone numbers to non-residents is generally considered illegal. Some companies may offer eSIMs with Japanese numbers, but they could be operating illegally, and the SIM may not work properly. 

Data-only SIMs on the other hand, still allow calls and messaging through apps like Skype and WhatsApp without any of the legal complications. 

For those who want to know more about obtaining a phone number in Japan and the related legal aspects, please refer to the article below.

Online Reservation vs. Airport Purchase

How to get a sim card in japan.

There are two ways to purchase a SIM card for Japan:

• Reserve one online before your trip and pick it up at the airport upon arrival.
• Buy one from a retailer at the airport after you land.

We recommend reserving your SIM card online for two main reasons:

• It’s cheaper. Online retailers have lower operating costs, so their prices are more affordable.
• You’ll avoid the risk of SIM cards being sold out. During peak travel seasons, airport shops may run out of stock. With a reservation, you can pick up your SIM card stress-free.

All the providers we introduce in this article offer the option to reserve your SIM card online. It’s a convenient choice to make before your trip.

7. Top SIM Cards for Japan Travel

Which SIM Card Should You Choose?

Feeling more confident about which SIM card might be right for you? Let’s dive deeper into the details of our top three recommended providers.

Scroll right for more if on mobile →→

While Sakura Mobile’s SIM cards may not be the cheapest, they offer relatively fast connection speeds (up to 20 Mbps) and unlimited data.

Here are some key benefits of choosing Sakura Mobile:

Extended Airport Counter Hours

Most companies listed above require you to pick up your SIM card at the airport post office, which may be closed if your flight arrives late. However, Sakura Mobile has airport pickup counters with extended hours, ensuring you can get your SIM card without any hassle.

Year-Round English Support

At Sakura Mobile, our English customer support is available year-round, making it easy to get help with your SIM card whenever you need it. You can also reach out to us via email for assistance.

Sakura Mobile’s website has over 3,000 positive reviews, significantly more than its competitors.

Main airport pickup counters

• 5 Best SIM Cards at Narita Airport | Unlimited Data Options
• 5 Best SIM Cards at Haneda Airport | Unlimited Data Options
• 6 Best SIM Cards at Kansai Airport | Unlimited Data Options

Sakura Mobile Review | Prepaid SIM & WiFi (Pick Up at Narita & Haneda Airports)

https://youtu.be/L1E1TH4a3QI

Visit Sakura Mobile’s Official Website

How to pick up your SIM card from the airport counter

Picking up your SIM card from the airport counter is easy. Just bring your reservation confirmation email from Sakura Mobile and your passport. The video below explains how to pick up a Sakura Mobile SIM card at the airport.

Explore Customer Feedback on Sakura Mobile SIMs

8. key factors when choosing a sim card.

Before introducing the top companies that provide travel SIM cards, here are some key points to consider:

• Connection speed
• Amount of data
• English support
• Airport counters

Let’s dive into each of these in more detail.

① Connection speed

When you’re on a trip and using your phone, you typically browse the web, message, or use Google Maps. For these activities, speeds of 3 to 5 Mbps are usually enough. Here’s a table of the ideal internet speeds for various online activities.

Scroll right for more if on mobile→→

You might wonder how fast prepaid SIM cards in Japan can be. While connection speeds vary by provider, you can generally expect speeds between 1 and 20 Mbps. We recommend choosing one with faster speeds for better reliability.

Although some providers claim speeds up to 187 Mbps, the maximum speed you’ll likely experience is around 20 Mbps. The comparison table lists actual speeds for each provider so you know what to expect. Note that some companies do not disclose their SIM card speeds; in these cases, we’ve marked them as “unknown” in the table

② Data Allowance

If you’ve been looking into prepaid SIM cards, you’ll notice many data plans available. With a limited data plan, you might run out of data in the middle of your trip, which can be very inconvenient. Imagine losing access to Google Maps and Google Translate in a foreign country — that would be quite stressful. To travel worry-free, we strongly recommend getting a prepaid SIM card with unlimited data. Our experts explain the prepaid SIM card with unlimited data in the blog below. Japan Prepaid SIM Data: Fixed vs. Unlimited Plans

What is a Fair Usage Policy (FUP)?

Ever wondered why your internet speed sometimes slows down, even with an unlimited data plan? The answer lies in a concept called the Fair Usage Policy (FUP).

Think of an FUP as ensuring everyone gets a fair share of the internet. It’s like a traffic cop, making sure the internet highway doesn’t get congested and everyone can keep moving at a reasonable speed.

Even with an unlimited SIM card, the FUP can slow down your connection speeds if you exceed a certain data threshold. To avoid triggering the FUP, consider saving big video downloads, online games, and YouTube binges when using Wi-FI at your hotel.

③ Service Coverage

The SIM card providers we recommend use Japan’s major carrier networks, covering 99% of populated areas. This ensures you’ll have internet access almost everywhere in Japan. However, signals may weaken in mountainous regions or underground.

④ English Language Support

If you’re having trouble connecting to the internet or setting up your SIM card, you’ll want to be able to contact customer support and get help.

Choose a SIM card provider that offers both email and phone support. This way, you can use the phone for urgent issues and email when you don’t need an immediate response.

Many prepaid SIM card providers don’t offer weekend support, which can be a real hassle if you need immediate assistance. Be sure to choose one with year-round customer service to make sure you’re not stuck waiting for the next business day.

⑤ Airport Pickup

To avoid any inconvenience when picking up your SIM card at the airport, ensure your arrival time aligns with the pickup counter’s operating hours. The last thing you want is to find the counter closed when you get there.

8. eSIM vs. Physical SIM Card vs. Pocket WiFi: Which is Best?

When traveling in Japan, eSIM and SIM cards aren’t your only options for staying connected. Pocket WiFi devices, also known as mobile hotspots or portable WiFi routers, are also popular among travelers.

We recommend buying a pocket WiFi  if you want to:

• Have easy internet access with minimal setup
• Share data with family and friends while traveling

Consider purchasing an eSIM or physical SIM card if you:

• Prefer not to carry a pocket WiFi device
• Prefer not to have to worry about another device’s battery life
• Don’t need to share data with others during your trip

Learn About Sakura Mobile’s Pocket WiFi Devices

9. eSIM & Physical SIM card FAQ

Can I Use a Japanese eSIM with My Phone?

To use a Japanese eSIM, your device must:

• Be eSIM-compatible
• Be SIM-free (not SIM-locked)
• Work with Japanese networks

Most providers’ websites have a list of compatible devices for their eSIM. For example, see the list of devices compatible with Sakura Mobile’s eSIM .

If you need help figuring out if your device is SIM-free and compatible with Japanese networks, contact your chosen carrier to confirm. For example, you can use Sakura Mobile’s Contact For m to send your device name and model number, and their staff will confirm compatibility.

Setting up an eSIM varies by device and provider but usually involves scanning a QR code. This code is often emailed or found in the provider’s app. Using the app may require you to register and provide personal details. If you get the QR code by email, you can often skip this step, making the process easier and faster.

Physical SIM FAQ

To use a Japanese SIM card, your device must be:

• SIM-free (unlocked)
• Able to receive Japanese carriers’ signals

Most providers’ websites have a list of compatible devices for their SIM cards. For example, see the list of devices compatible with Sakura Mobile’s SIM cards .

If you need help figuring out if your device is unlocked and can receive Japanese carriers’ signals, contact your chosen carrier to confirm. For example, you can use Sakura Mobile’s Contact Form to send your device name and model number, and their staff will confirm compatibility.

The SIM card setup process varies depending on your device and provider. However, it’s straightforward and can be completed in 10 to 15 minutes by following the manual.

10. eSIM and physical SIM card or Pocket WiFi

eSIM and physical SIM cards are not the only options for connecting to the internet while traveling in Japan. Pocket WiFi devices, also known as mobile hotspots or portable WiFi routers, are also popular among travelers.

We recommend buying a pocket WiFi if:

• You want to use the internet with minimal setup
• You want to share data with family and friends who are traveling with you

On the other hand, you should consider purchasing an eSIM or physical SIM card if:

• You do not want to carry a pocket WiFi device on your trip
• You are worried about the battery life of another device
• You are not sharing data with other people during your trip

Sakura Mobile offers pocket WiFi devices in addition to eSIM and physical SIM cards. If you are interested, please check the Sakura Mobile travel pocket WiFi website.

11. Final Thoughts

This article covered everything you need to know when shopping for mobile internet access for your Japan trip. We hope you found it helpful. Thank you for reading, and good luck!

Why Sakura Mobile is the Best Choice for eSIM & SIM Cards

Key features for Sakura Mobile products

• Unlimited SIM card data plans starting at just 4,500 JPY.
• Access to the stable, fast docomo 4G network.
• Coverage in 99% of populated areas.
• Reliable, year-round English customer support.
• Convenient pickup at any international airport in Japan.
• Order online and pick up your SIM card as early as the next day.
• Free delivery of SIM cards to hotels across Japan.

For your eSIM and SIM card needs in Japan, we recommend Sakura Mobile, which has earned over 3,000 customer reviews and a 4.7/5 satisfaction rating. If you’re getting a SIM card, Sakura Mobile will deliver it free of charge to the airport or the place you’ll be staying.

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