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By
Clay Thomas
When you arrive in Japan, you'll need mobile data or internet right away to check train routes, use maps, translate menus, message hotels, open ride apps, and stay in touch while moving between cities. Japan has excellent phone and internet service, but visitors and residents have different paths to getting connected.
For most short-term visitors, mobile data is enough and much easier to get. However, if you need a Japanese phone number, it involves extra steps, such as obtaining a Residence Card, registering a Japanese address, and choosing a carrier that supports local voice plans.
In this guide, we'll walk you through the main ways to get phone service in Japan, including eSIMs, pocket Wi-Fi, prepaid SIM cards, roaming, and long-term phone plans for residents. We'll also cover how each option works, what it typically costs, and which one makes the most sense for your trip or your move to Japan.
Phone Service Options for Tourists in Japan
Tourists have several ways to get online in Japan. The best choice depends on your phone, your travel group, your budget, and how much effort you want to deal with after landing.
Japan eSIM
A Japan eSIM is a digital SIM that gives your phone mobile data without a physical card. You buy the plan online, receive a QR code or installation instructions by email, install it before your trip, and connect when you arrive.
This is the easiest option for most tourists because it removes the airport errand. You do not need to find a kiosk, remove your home SIM card, carry a router, or return equipment before your flight home. You still need an unlocked, eSIM-compatible phone, but once that is handled, setup is usually faster than every other option.
A Japan-specific eSIM with strong local network access is a better fit for that kind of trip than a generic travel data plan. Journey Japan eSIM is the strongest option if your trip is focused on Japan.
Our current plans include 10GB, 20GB, 50GB, and Unlimited Pro 5G options, with prices of $21 for 10GB, $29 for 20GB, $49 for 50GB, $59 for Unlimited Pro 5G for 15 days, and $84 for Unlimited Pro 5G for 30 days.
Journey Japan eSIM uses NTT Docomo and KDDI as its network partners, which is how we provide 99% nationwide coverage, including rural areas. We also support QR codes, and installation instructions are delivered immediately after purchase, with activation automatic upon arrival in Japan.
The limitation is that tourist eSIMs are usually data-only. You will not get a Japanese phone number. For a normal trip, that is not a problem. LINE, WhatsApp, FaceTime, Messenger, and email cover most communication needs, and hotels or restaurants rarely need you to have a local mobile number.
Pros:
No physical card, kiosk visit, or equipment to return
Set up before your trip, connect on arrival
Your home SIM stays in your phone, so you can still receive calls and texts on it
Cheapest option for solo travelers and couples
Cons:
Requires an unlocked, eSIM-compatible phone
Data-only, so no Japanese phone number
Setup is unfamiliar if you've never installed an eSIM before
Pocket Wi-Fi
Pocket Wi-Fi is a small mobile router that creates a private Wi-Fi network for your phone, laptop, tablet, or travel group. Before eSIMs became common, this was one of the default ways tourists got internet in Japan.
If you are traveling in a group and will be together all day, you can share one router instead of buying separate data plans. It also helps if your phone is locked, since it connects via Wi-Fi rather than a local SIM or eSIM.
The tradeoff is the device itself. You have to pick it up or have it delivered, keep it charged, carry it during the day, and return it before leaving Japan.
Prices vary by provider and plan. Japan Wireless lists a pocket Wi-Fi plan starting at US$ 5.10 per day, while NINJA WiFi lists Pocket Wi-Fi options starting at ¥440 per day, with higher daily rates for larger data allowances.
Pocket Wi-Fi is best for families, groups, and travelers with locked phones. For solo travelers or couples with unlocked eSIM-compatible phones, it usually adds unnecessary steps.
Pros:
One device connects the whole group, including laptops and tablets
Works with locked phones
No SIM swapping or phone settings to change
Cons:
One more device to pick up, carry, charge, and return
Battery typically lasts 6–10 hours, so heavy days need a power bank
Everyone loses internet when the group splits up
Loss or damage fees if anything happens to the router
Physical Prepaid SIM Cards
A physical prepaid SIM card provides mobile data via a small card you insert into your phone. It is useful when your phone is unlocked but does not support eSIM.
You can buy tourist SIM cards at airports, electronics stores, some convenience stores, and online before your trip.
The downside is the setup. You have to remove your home SIM card, store it somewhere safe, insert the Japan SIM, and sometimes adjust APN settings. If you buy in person, some sellers may also verify passport information at purchase or activation, especially for prepaid SIMs bought in Japan.
A physical SIM is a reasonable backup when eSIM is not an option.
Pros:
Works on unlocked phones that don't support eSIM
Widely available at airports, electronics stores, and online
No extra device to carry
Cons:
You have to remove and safely store your home SIM
May require APN setup and passport verification at purchase
No calls or texts on your home number while the Japan SIM is in
The tiny card is easy to lose
International Roaming
International roaming lets you keep using your existing phone number and home carrier while you are in Japan. It is the least disruptive option because you do not need to buy a separate plan for Japan.
If you are traveling from the US, Verizon lists TravelPass at $12 per day in 210+ countries and destinations, and AT&T lists International Day Pass at $12 per day on land for one line.
Roaming makes sense if you need your home number for work calls, bank texts, or urgent family contact. The cheaper approach is to keep your home line active for calls and texts, turn off data roaming, and use a Japan eSIM for data.
Pros:
Nothing to buy, install, or set up
Keeps your home number active for calls and texts
Billing stays with your existing carrier
Cons:
Most expensive option, often $12/day, or $150+ over two weeks
Speeds may be reduced depending on your plan
Daily fees can trigger accidentally if data roaming switches on
Free Wi-Fi
Free Wi-Fi is available in many airports, hotels, cafés, train stations, shopping centers, and tourist information centers. It helps when you want to save data or download something large at your hotel.
It should not be your only plan. Free Wi-Fi disappears when you walk outside, enter a rural area, ride a train, or need directions between stations. Public Wi-Fi can also be slow, crowded, or locked behind registration pages.
Use free Wi-Fi as a backup. Do not rely on it for your first day in Japan, train transfers, hotel check-in, translation, or anything time-sensitive.
Pros:
Free
Available in airports, hotels, stations, and many cafés
Good for downloads and saving data at your hotel
Cons:
Disappears the moment you're outside, on a train, or in a rural area
Often slow, crowded, or behind registration pages (sometimes Japanese-only)
Unsecured networks carry privacy risks
Unusable for navigation between locations, which is when you need data most
How to Get a Japanese Phone Number?
A Japanese phone number gives you a local 070, 080, or 090 number that can receive SMS codes, make normal voice calls, and work with services that ask for a domestic mobile number.
If you are moving to Japan long-term, this is the most practical option. Banks, apartment applications, job forms, school paperwork, delivery services, clinics, and some apps may ask for a Japanese phone number to contact you, so you'll need one.
Tourists usually cannot get a normal Japanese phone number. Japan requires identity checks for mobile voice contracts, and Residence Cards are issued to mid- to long-term residents, not to temporary visitors or to people granted permission to stay for three months or less.
Some prepaid voice options do exist, but availability is limited, and conditions vary, so most visitors should not plan their trip around getting a local number.
Most providers will ask for identification and a Japanese address. You'll need your Residence Card, which contains identity, address, and residence status information. Some carriers won't approve a voice plan until your Japanese address is registered.
Get Phone Service in Japan Before You Land
Most tourists do not need a local 070, 080, or 090 number when they arrive in Japan. They need data that works as soon as they arrive, so they can use maps, train apps, translation apps, hotel messaging, ride-sharing apps, email, and WhatsApp without searching for airport Wi-Fi or waiting in line for a SIM card.
Journey Japan eSIM is built for this first step. It gives travelers mobile data in Japan without renting a pocket Wi-Fi device, swapping a physical SIM card, or incurring expensive daily roaming charges.
We deliver plans by email after purchase, and activation happens when you arrive in Japan. JJ eSIM currently offers 10GB, 20GB, 50GB, and Unlimited Pro 5G Japan eSIM plans, with coverage powered by NTT Docomo and KDDI across 99% of Japan, including rural areas.
If you want your phone ready before your flight lands, choose your plan before you travel and install the eSIM in advance.
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