Internet in Japan: A Guide for Tourists and Expats
Japan has seen a significant increase in both foreign tourists and expats in recent years, and getting reliable internet access is one of the first things to figure out once you arrive. Whether you need a pocket Wi-Fi rental for a two-week trip or a full home internet connection for a long-term stay, there are options in Japan for every kind of traveler and resident.
This article will explain how foreigners, both tourists and expats, can get internet in Japan, covering free Wi-Fi, eSIM, pocket Wi-Fi, prepaid sim cards, and home fiber internet, along with the key differences between short-term and long-term options.
Best internet options for foreigners in Japan in 2025
There are various options for internet connection in Japan depending on your needs.
For tourists: short-term internet access
For tourists, the following options are commonly used.
Free Wi-Fi Hotspots—Public Wi-Fi access at major train stations, major airports, convenience stores, and tourist areas.
eSIM—A digital SIM for instant mobile data in Japan, activated via QR code.
Pocket WiFi—Portable Wi-Fi routers that connect multiple devices and offer unlimited data. Available for rent at airports and online services.
Prepaid Physical SIM Cards—Data-only and voice-enabled prepaid SIM cards for unlocked smartphones.
1. Free Wi-Fi
It is still possible to get by with Free Wi-Fi in Japan in major cities as more and more facilities are offering free Wi-Fi. Not only major airports and stations but also many cafes and shopping malls offer Free Wi-Fi for tourists to use.
NTT, a major Japanese telecommunications company, offers the app "Japan Wi-Fi Auto Connect," which connects you to free Wi-Fi hotspots at over 60,000 spots across Japan, including major train stations, major airports, convenience stores, and public spaces. SoftBank runs a separate service called Free Wi-Fi Passport, giving you access to roughly 400,000 hotspots at restaurants, cafes, major train stations, and hotels across Japan. Keep in mind that free Wi-Fi in Japan often requires re-registering every two weeks, and connections can slow down considerably in busy areas during peak hours.
However, free Wi-Fi in Japan does have real limitations. If you want to use Google Maps to navigate between Wi-Fi hotspots, relying on free Wi-Fi alone is inconvenient since you'll lose your internet connection the moment you leave a hotspot's range. Rural areas and remote areas in Japan often don't have free Wi-Fi at all, and coverage in general is far less consistent than in most hotels or major cities. There are also security risks when using free Wi-Fi, since public networks are more vulnerable than a private connection.
2. eSIM
eSIM is a digital SIM card that gives you a mobile data internet connection without physically inserting a nano SIM or any other physical SIM card.
An eSIM can be activated simply by changing the settings on your own personal phone, and can be purchased and set up through an eSIM app such as Airalo and Holafly. It costs almost the same as a prepaid physical SIM card, but is easier to set up, especially useful if you're only in Japan for a short trip and don't want to deal with a physical SIM swap.
However, older smartphone models, and most Android devices released before 2019, are incompatible with eSIM. It's important to check whether your specific smartphone model supports eSIM before you travel, since your phone will otherwise need a physical SIM card instead. Running an eSIM alongside your regular SIM can also use more battery life than usual, so it's worth carrying a portable charger if you're out for a full day.
I personally recommend Airalo, since I was able to use it at almost every major travel destination in the world, and it was fairly easy to set up.
3. Pocket WiFi
Another option is pocket wifi, a portable wifi router that is slightly smaller than most mobile devices. It's convenient and easy to use, since you can turn it on whenever you need an internet connection and use it like a normal wi fi router at home, giving your whole group unlimited internet without draining anyone's personal data plan.
Pocket wifi can be rented online, at the airport, or from shops in the city. It's worth doing some research in advance on how and where to rent, since availability, price, and the rental period allowed can vary between providers. Japan Wireless, one of the more established providers, reports over 800,000 users have rented from them.
Pocket Wi-Fi usually has a large amount of data, often unlimited data, and can connect to multiple devices at once. It is recommended for tourists traveling in a large group. Many rental packages, including Japan Wireless and other major providers, include a power bank for free, which helps since a pocket Wi-Fi device typically only lasts a full day of use with the power bank attached.
Returning the device is usually simple: most providers give you a prepaid return envelope, and you can return the pocket Wi-Fi at any postbox in Japan rather than needing to go back to a rental counter. Still, pocket Wi-Fi routers are rented, and you need to return them by the end of your rental period, which can be an inconvenience for some. There is also a risk of a fee if you lose or damage the device.
4. Prepaid physical SIM card
A prepaid SIM card is also a good option. Unlike pocket Wi-Fi, there is no worry about return or damage. The price tends to be cheaper since the data amount is generally smaller.
You can get a prepaid SIM card at the airport or in the city. Data plans for prepaid SIM cards vary in speed and data limits, so compare a few options based on how much you'll actually use your phone before choosing one.
For a SIM card, it is important to check if your smartphone has the SIM lock or not. Some people might have a hard time setting up a SIM card in the beginning. It might take a longer time than you expected, after a long tiring flight to Japan.
For expats: long-term internet solutions
For expats and anyone planning a long-term stay, the following are some good options for internet access.
Home fiber optic internet—High-speed and reliable, but requires a long-term contract. Providers include NTT, SoftBank, au, and Rakuten Mobile.
Mobile SIM plans—Postpaid or prepaid SIM cards from major carriers (SoftBank, NTT Docomo, au, Rakuten) or MVNOs (budget carriers like IIJmio, Mobal, and Sakura Mobile ).
Pocket WiFi for long-term use—Some companies offer rental plans for foreigners who don’t want a contract or are waiting for home internet installation.
1. Home fiber optic internet
At home, it is recommended to have fiber optic internet. It is the most stable and high-speed internet option, which is ideal for long-term residents in Japan, and Japan has one of the most advanced fixed broadband infrastructures in the world, with median download speeds now exceeding 200 Mbps.
Major internet providers such as NTT, Softbank, au, and Rakuten Mobile offer fiber optic plans. Most of these providers, aside from au Hikari and NURO Hikari, lease and run on the same underlying fiber infrastructure owned by NTT, which is one reason coverage and reliability are consistently strong across providers.
Major internet providers offer fiber optic plans with the following approximate monthly costs:
SoftBank Hikari — around ¥4,180/month, with a discount for SoftBank mobile carrier customers
Docomo Hikari — around ¥4,180/month, with a discount for Docomo mobile customers
au Hikari — around ¥4,785/month, with a discount for au mobile customers
Rakuten Hikari (Rakuten Mobile's home internet service) — ¥4,180/month for apartments, ¥5,280/month for houses
NURO Hikari — around ¥5,500/month, with some of the fastest speeds available, though coverage area is more limited
For expats who want English-language support throughout the sign-up and installation process, GTN Hikari and Sakura Fiber Internet are both built specifically for foreign residents, with multilingual customer support handling contract signing, installation, and cancellations directly.
Some providers offer discounts for bundling fiber internet with a mobile plan from the same company, and some include a free Wi-Fi router as part of the package.
However, you need to consider how long you will be living in Japan, since standard contracts usually last two years with early termination fees. Also, installation can take some time, often two to four weeks, so it's important to arrange it well in advance of your move-in date.
👉See also: How to Set Up Utilities For the First Time in Japan
2. Mobile SIM Card Plans
For your mobile internet access, it is common to have a postpaid or prepaid mobile SIM plan. Major carriers such as NTT Docomo, SoftBank, au, and Rakuten Mobile provide postpaid contracts, but they may require a residence card, bank account, and a registered address.
Whether the bank account needs to be a Japanese one depends on the provider.
If you're unsure how long you'll stay in Japan, it's recommended to use prepaid or contract-free SIM plans instead.
If you're a light internet user living alone, tethering your laptop or tablet through your smartphone's mobile data is another option worth considering instead of a separate home internet contract. It's economical since it avoids a second monthly bill entirely, though it does use up your phone's data allowance and battery life faster, and connection speeds will generally be slower than a dedicated fiber optic connection.
👉See also: How To Get A Japanese Phone Number: A Guide For Foreigners
3. Pocket WiFi for long-term use
A flexible alternative is to rent a pocket Wi-Fi for long-term use. This option is for expats who do not want a contract or need internet access while waiting for home installation. Some providers, like Japan Wireless and Sakura Mobile , offer monthly rental options with unlimited data.
Where to get a SIM card and pocket WiFi in Japan for tourists
In general, you can pick up SIM card or pocket WiFi at the airport or various electronics stores or convenience stores in Japan.
1. Airport and online pickup
A lot of tourists buy SIM cards or rent pocket Wi-Fi at airports. Some minor airports may or may not have these options.
Some tourists order SIM cards or pocket Wi-Fi online in advance and have them picked up at the airport to have them delivered to hotels and Airbnb rentals.
2. Electronics stores and convenience stores
Electronics stores such as Yodobashi Camera and Bic Camera sell prepaid SIM cards. Some convenience stores also carry temporary data SIMs.
Where to get Internet in Japan for expats
If you’re looking for Internet for a long-term stay, then it’s likely you’ll need to sign a contract. The following places will help you get set up.
1. Mobile carrier stores
To get fiber-optic internet or SIM card contracts, you can visit SoftBank, Docomo, or au stores. However, Japanese language skills or an interpreter may be necessary.
2. Online
MVNOs offer easier sign-up options (sometimes available in English).
3. MailMate’s fiber optic Internet and utility setup service
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FAQ
How do tourists get the internet in Japan?
Free Wi-Fi, eSIMs, pocket Wi-Fi, and prepaid SIM cards are popular options among tourists in Japan.
What is the best internet provider in Japan?
NTT, Softback, au, and Rakuten Hikari are popular options for home fiber internet. IIJmio, Mobal, and Sakura Mobile are well-known options for budget-friendly SIMs. Japan Wireless and Sakura Mobile offer flexible and various internet plans.
What is pocket WiFi?
Pocket Wi-Fi is a portable Wi-Fi router that can connect multiple devices to the internet via a mobile network. It is often rented by tourists and expats who need temporary or contract-free internet access.
How do expats get the internet in Japan?
Expats will often use home fiber optic internet, mobile SIM plans (contract or prepaid), or pocket Wi-Fi for long-term use.
How much does it cost for the internet as an expat in Japan?
Home fiber internet will cost between ¥4,000–¥8,000/month. Mobile SIM plans will cost from ¥3,000–¥5,000/month. And long-term pocket Wi-Fi is ¥3,000–¥7,000/month.
Does Japan have a lot of free wifi?
Yes, but coverage can be inconsistent. Free Wi-Fi is available at airports, major train stations, convenience stores, cafes, and tourist attractions, but connections may require registration or have time limits.
Is eSIM or pocket wifi better for a trip to Japan?
It depends on your group size and device compatibility. An eSIM is a good option for solo travelers or couples with compatible smartphones, since it activates instantly via QR code with no device to rent or return. Pocket wifi is generally the better choice for groups, since a single rented pocket wifi router can connect multiple devices, sometimes up to five, at once, and doesn't require a compatible phone.
Where can I buy a physical SIM card in Japan?
Prepaid physical SIM cards are available at major airports upon arrival, at electronics stores such as Yodobashi Camera and Bic Camera, and at some convenience stores in Tokyo and other major cities. You can also order a SIM card online in advance and have it delivered to your hotel or picked up at the airport.
In closing
Japan offers a variety of internet options for foreigners.
Choosing the right option depends on the length of your stay, data needs, and device compatibility.
Expats can simplify the process with MailMate services, ensuring hassle-free internet and utility setup!
Founded in 2019, MailMate has simplified property ownership for foreigners living abroad and is an increasingly popular option recommended by users and well-known industry figures.
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