One of the essentials for traveling in Japan is data connectivity, whether it’s for posting photos on social media or searching for transportation to your destination. However, there are times when the SIM card you prepared isn’t recognized properly, or you forget to buy one before departure and need to get one locally at the last minute.
For such situations, we’ve put together information on where inbound travelers can purchase a SIM card in Japan on the same day. We’ll also introduce eSIMs, which can be purchased online. Be sure to check out the key points to keep in mind before making a purchase, and use this as a reference for your trip.
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*All information in this article is current as of November 2025. Please check official websites for the latest details before your trip.
※If you purchase or reserve the products introduced in the article, a portion of the sales may be returned to FUN! JAPAN.
How should tourists choose and what should they be aware of when buying a SIM card in Japan?
Prepaid SIM cards are the mainstream for short-term tourists in Japan to purchase and use within the country. A prepaid SIM card is one where the usage period and data capacity are predetermined, and can be used until the purchased data capacity is exhausted or the usage period expires.
However, even though we say "prepaid SIM card", there are various types. Generally, SIM cards for tourists visiting Japan are data-only, and voice calls and SMS are not available. On the other hand, it is characterized by the fact that it can be used immediately after purchase by inserting it into a SIM-free or SIM-unlocked device, as there is no need for contract procedures with communication carriers (※ Some require setting and activation procedures).
Three sizes of SIM cards
- (Left) Standard SIM / miniSIM (25mm×15mm)
- (Middle) microSIM (15mm×12mm)
- (Right) nanoSIM (2.3mm×8.8mm)
The prepaid SIM cards sold in stores are basically "multi-size" that can accommodate all three types of SIM cards in circulation: "standard SIM", "microSIM", and "nanoSIM". Since you detach the card from the backing paper to match the size suitable for your device, there is no need to determine the size in advance.
Also, prepaid SIM cards have various validity periods depending on the product. The general validity period ranges from a few days to one month, and there are also those valid for half a year. On the other hand, the amount of data communication also varies by product, with some having a daily limit, some allowing unlimited use during the period, and others offering several GB to tens of GB of data. Some products even allow you to purchase additional data as needed, so consider your usage situation and choose a product that meets your needs, such as the number of days you want to use it, the amount of data, etc.
eSIMs Are the Way to Go! How Are They Different from Physical SIM Cards?
In recent years, eSIMs have rapidly gained popularity among visitors to Japan. eSIM stands for “Embedded SIM,” which refers to a SIM that is built into your device. It is pre-installed in the device and can be reprogrammed via the internet. Using it is simple: after purchasing an eSIM, just follow the included instructions or guide to set it up online and you’re ready to go. Unlike traditional physical SIM cards, there’s no need to remove or swap out any cards physically.
How to Choose and What to Watch Out for When Buying an eSIM
When using an eSIM, it’s important to check the data plan, compatible devices, and setup procedures.
Check the Data Plan
Just like with physical SIM cards, there are a wide variety of eSIM data plans available. You can choose from plans that calculate data usage per day or total data for the period, usage periods ranging from one day to over 30 days, and data amounts from 500MB to unlimited. With eSIMs, it’s also easy to add more data. If you choose an eSIM from a provider that allows you to purchase additional data through a dedicated app or website, you can instantly top up online if you use more data than expected during your trip, without having to visit a store.
Check Device Compatibility for eSIMs
Before purchasing an eSIM, always confirm whether your device is compatible. Most newer smartphones support eSIMs, but some models sold in certain countries or regions may not, even if they are the same model. For example, the Japanese version of an iPhone may support eSIM, but the Hong Kong or Macau versions may only support dual nano-SIM cards (physical SIM cards only).
- iPhone models that support eSIM include iPhone XS, iPhone XS Max, iPhone XR and later (such as the iPhone 11, 12, 13, 14, 15, 16, and 17 series).
- Android models that support eSIM include many from major manufacturers such as Google Pixel, Galaxy, Xperia, AQUOS, Xiaomi, and OPPO. (Please check the manufacturer’s website for details.)
How to Check if Your Device Supports eSIM
Because some models sold in certain countries or regions may not support eSIM, we recommend checking directly on your own smartphone.
- For iPhone: Go to “Settings” → “Cellular” → “Add eSIM”
- For Android: Go to “Settings” → “Network & Internet” → “SIM” → “Add SIM” → “Set up eSIM”
If these options appear, your device supports eSIM.
Main Ways to Set Up an eSIM
After purchasing an eSIM online, check the included setup guide. There are three main ways to set up an eSIM:
- (1) Install by scanning a QR code: You can install the eSIM by scanning a QR code.
- (2) Manual installation: Enter the manual setup code displayed along with the QR code into your smartphone’s eSIM setup screen to install.
- (3) Install directly from a dedicated app or website: Some eSIM brands allow you to install with a single click from their app or website.
In addition, since an internet connection is generally required to set up an eSIM, it is recommended to use free Wi-Fi at the airport or hotel, or to complete the setup at home before departure. Depending on your device, the setup process may be somewhat complicated, so be sure to check the setup procedure, time required for activation, and data usage start date before making a purchase.
“SIM Card vs eSIM vs Pocket Wi-Fi”: Which is Better?
When using the internet while traveling abroad, the three main options are SIM cards, eSIMs, and pocket Wi-Fi. Each has its own features, so choose the one that best fits your travel style, group size, and budget.
SIM Card
SIM cards can be purchased online, or immediately at stores in airports or city centers in your home country or at your destination. You can receive support from staff at the store, making it a reassuring option for first-time users. SIM cards can be used even with devices that do not support eSIM, but you will need to physically swap the card, and since the card is small, be careful not to lose it. Also, if you use up your data allowance, you will need to purchase a new SIM card.
💡Recommended for those who want in-person support at the store or are unsure about digital setup.
eSIM
With eSIM, you can complete your purchase and setup before your trip, so you do not have to worry about SIM setup or issues after arrival. There is no need to swap physical cards, so there is no risk of losing one, and with dual SIM functionality, you can keep your home country phone number active. In addition, if you use up your data, you can easily purchase more through a dedicated app or website. However, eSIM can only be used with compatible devices, and you will need a Wi-Fi environment for setup. Be sure to check if your device is compatible and review the setup instructions before purchasing.
💡Ideal for those who want to complete all preparations before departure and flexibly add data during their trip.
Pocket Wi-Fi
Pocket Wi-Fi devices allow multiple devices to connect at the same time, so if you share one unit among several people, you can reduce the cost per person. You can connect not only smartphones but also laptops and tablets, regardless of whether your device supports SIM cards. However, you will need to carry the device with you at all times, manage charging, and handle the process of picking up and returning the rental. Also, if you split up and go separate ways, you may not be able to contact each other, so keep this in mind.
💡Recommended for those traveling in a group or who want to use multiple devices.
Comparison Table: “SIM Card vs eSIM vs Pocket Wi-Fi”
| Item | Physical SIM Card | eSIM | Pocket Wi-Fi |
| Receive Physical Item | Yes | No | Yes |
| Return Item | No | No | Yes |
| Compatible Devices | SIM-free devices | eSIM-compatible devices only | Devices that can connect to Wi-Fi |
| Number of Simultaneous Connections | 1 device | 1 device | Multiple devices |
| Use with Home Country SIM | Possible depending on device | Possible | Possible |
| Adding Data Usage | No (New purchase required) | Yes (Can be purchased online) | Depends on plan |
*Some products may have different availability. Please check each product for details.
Summary of places where you can buy SIM cards in Japan
There are mainly five ways for tourists to purchase and use prepaid SIM cards in Japan on the same day. If you arrive at a major airport, you can find counters and vending machines. In the city, you can find them at electronics stores and convenience stores in the city center. Each location has different characteristics, so choose according to your timing and needs.
1. Airport Sales Counter (Narita International Airport, Haneda Airport, Kansai International Airport, etc.)
Haneda Airport
© Tokyo Tourism Foundation © Tokyo Convention＆Visitors Bureau
At airports such as Narita International Airport, Haneda Airport, and Kansai International Airport, which serve many international flights, airport counters selling prepaid SIM cards for use in Japan are set up mainly in the arrival lobbies.
One of the advantages of purchasing a SIM card at an airport counter is that the staff are accustomed to dealing with travelers. You can receive support in multiple languages for purchase procedures and usage instructions, so even those who are not good at operations such as initial setup and activation procedures can purchase with confidence. In addition, some stores offer technical support in English and Chinese after purchase, so you can feel secure throughout your trip.
You can check the details of SIM card sales locations from the official websites of each airport.
Locations of SIM card sales counters at major airports (example)
【Narita International Airport】
- 1F of Terminal 1 Building & Terminal 2 Building: JAL ABC, AnyFone JAPAN
- 1F of Terminal 3 Building: Softbank Global Rental
【Haneda Airport】
- 2F of Terminal 3 Building: JAL ABC, Softbank Global Rental / AnyFone JAPAN
【Kansai International Airport】
- 1F of Terminal 1 Building: JAL ABC, AnyFone JAPAN
2. SIM Card Vending Machines (Narita International Airport, Haneda Airport, Kansai International Airport, etc.)
Depending on the arrival time of your flight, the sales counter may be closed. In such cases, the SIM card vending machines, which are available 24/7 at major airports, are very convenient. You can easily purchase a prepaid SIM card at any time during the terminal building's business hours.
The data capacity ranges from 1GB to unlimited plans, and the usage period can be as short as a few days to as long as several tens of days. You can choose from a variety of plans according to the length of your trip and frequency of use. Payments can be made in cash, credit card, and some machines also accept various transportation IC cards such as Suica, depending on the model.
Locations of SIM card vending machines at major airports (example)
【Narita International Airport】
- 1st Floor of Terminal 1 Building, 1st Floor of Terminal 2 Building
【Haneda Airport】
- 3F, Terminal 3 Building
【Kansai International Airport】
- 1F, Terminal 1 Building
【Chubu Centrair International Airport】
- 2F & 3F, Terminal 1 Building, 1F, Terminal 2 Building
【New Chitose Airport】
- International Terminal Building
3. Electronics Retail Stores (Bic Camera, Yodobashi Camera, Yamada Denki, etc.)
If your prepared SIM card suddenly stops working while you're out and about, you can rely on electronics retail stores like Bic Camera, Yodobashi Camera, and Yamada Denki.
Not only do they have a wide range of products, but they also have stores in major cities across the country, making it easy to drop by while traveling. Many of their stores in urban areas have staff who can speak Chinese and English. They provide advice and support on how to choose and set up your SIM card, so if you have any problems or questions after purchase, you can consult with them immediately.
If you accumulate points or use tax-free coupons, you can shop even more economically.
👉 For a coupon that gives you up to 17% off at Bic Camera, click here!
Examples of electronics retail stores that sell SIM cards for tourists visiting Japan
- Bic Camera https://www.biccamera.com/
- Yodobashi Camera https://www.yodobashi.com/
- Yamada Denki https://www.yamada-denkiweb.com/
- Sofmap https://www.sofmap.com/
4. Physical stores of telecommunications companies (Softbank Shop)
SIM cards for tourists visiting Japan can also be purchased from the physical stores of SoftBank, one of Japan's major mobile carriers. It's called "Prepaid SIM for Travel".
There is only one type available, which allows you to use up to 3GB of data communication for 31 days. Although setup and procedures are required before use, the steps are written in English on the accompanying card, and store staff will assist you if needed, so even those who are not good at setting up can start using it smoothly.
Don't forget to bring your original passport when purchasing.
Prepaid SIM for Travel
- Sales location: SoftBank Shop (and other electronics retailers, SoftBank rental counters at airports, etc.)
- Official website: https://www.softbank.jp/mobile/special/prepaid-sim-for-travel/
5. Convenience Stores (FamilyMart, Seven-Eleven, NewDays)
If you urgently need a SIM card during the night and there are no electronics stores or carrier shops open nearby, one option is to look for one at a convenience store.
As of May 2024, the convenience store chains that sell prepaid SIM cards for foreign tourists are only FamilyMart, Seven-Eleven, and NewDays. However, the areas and stores that handle tourist SIM cards are limited, so make sure to check in advance if they are available at a nearby store.
Convenience stores that handle SIM cards for foreign tourists (example)
【FamilyMart (only in Kanto and Kansai regions)】
- Product for sale: JAPAN&GLOBAL SIM
- Official website: https://www.in-plus.co.jp/
【7-Eleven (Narita Airport Terminal 2 B1F)】
- Products for sale: INPLUS Prepaid SIM
- Official website: https://www.in-plus.co.jp/
【NewDays (only at selected stores)】
- Products for sale: Japan Travel SIM
- Official website: https://t.iijmio.jp/
6. Purchase eSIM or SIM Card Online
If you want to be fully prepared before arriving in Japan, purchasing online is the best option. Especially with eSIM, you can complete everything online from purchase to activation, so you can use the internet as soon as you arrive at the airport.
Another advantage of purchasing online is that you can take your time to carefully compare pricing plans and data allowances without feeling rushed. Many websites support multiple languages, so there are no language barriers, and you may also be able to take advantage of online-exclusive discounts or coupons.
If you plan to purchase online after arriving in Japan, you will need a WiFi connection. Free WiFi is available at airports, some convenience stores, cafes, and major train stations. Since setting up an eSIM also requires an internet connection, it is best to complete the setup at home before departure or at a stable WiFi environment such as the airport after arrival.
Recommended Physical SIM Card Purchase Sites (Airport/Hotel Pickup)
▶[klook] Japan Unlimited Data 4G SIM Card (Pick up at Japanese Airports / Provided by Sakura Mobile)
▶[klook] Japan Unlimited Data 5G SIM Card (Pick up at Japanese Airports)
Recommended eSIM Purchase Sites
▶[NAVITIME] Japan eSIM: 7 days / 15 days / 21 days Unlimited
▶[klook] Japan eSIM | NTT Docomo
▶[klook] Asia Countries 4G eSIM (Provided by Airalo)
▶[kkday][50% OFF] Japan Domestic Docomo / au / SoftBank eSIM One-Click Installation Supported
▶[kkday] Asia Multiple Countries 5G eSIM One-Click Installation Supported
There are many ways to get a SIM card in Japan. If you prioritize support, you can visit electronics retailers or mobile carrier stores. For late night or early morning needs, eSIMs, and even vending machines are available. In Japan, there are plenty of ways to obtain a SIM card or eSIM. If you suddenly need a SIM card while traveling, do not panic and first try looking for a nearby store.
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