SIM Card & eSIM Guide for Japan
Stay connected from the moment you land — without paying international roaming fees.
Your Connectivity Options
Japan has excellent mobile coverage, even in rural areas and on trains. As a tourist, you have three main options: eSIM, physical SIM card, or Pocket WiFi. Here's a quick comparison:
| Option | Convenience | Cost | Best For |
|---|---|---|---|
| eSIM | ⭐⭐⭐⭐⭐ | ¥1,500–4,000 | Most travelers |
| Physical SIM | ⭐⭐⭐⭐ | ¥2,000–5,000 | Older devices |
| Pocket WiFi | ⭐⭐⭐ | ¥400–800/day | Groups sharing |
eSIM — The Easiest Option
If your phone supports eSIM (most iPhones from XS onwards and many Android flagship phones), this is the recommended option. You can purchase and activate before leaving home, and be connected the moment your plane lands.
Popular eSIM providers for Japan:
- Airalo — Budget-friendly, easy app, multiple data plans (1GB–20GB)
- IIJmio — Japanese carrier, reliable coverage on Docomo network
- Ubigi — Good for multi-country trips through Asia
- Nomad — Simple interface, competitive pricing
Physical SIM Cards
Physical tourist SIM cards are available at airports (Narita, Haneda, Kansai, etc.) and convenience stores (7-Eleven, Lawson, FamilyMart). They are data-only — voice calls are not included on most tourist plans.
- →IIJmio Tourist SIM — 15GB for 15 days, available at airports. Runs on Docomo network.
- →Softbank Tourist SIM — Available at convenience stores, good coverage nationwide.
- →B-Mobile — Available online and at Bic Camera/Yodobashi stores.
Make sure your phone is unlocked and accepts a nano-SIM (most modern phones do). Check the SIM tray size before purchasing.
Pocket WiFi
Pocket WiFi devices let multiple people share one connection, making them good for groups. You pick up the device at the airport and return it before departure. The downside is you need to carry an extra device and keep it charged.
- →Japan Wireless — Unlimited data, pick up at airport, around ¥600/day
- →Ninja WiFi — Good coverage, ships to hotel, around ¥400/day
Tips for Staying Connected in Japan
- ✓Download offline maps — Google Maps offline or Maps.me work well even without data.
- ✓Free WiFi is patchy — Don't rely on it. Many restaurants and smaller shops don't offer WiFi.
- ✓7-Eleven ATMs accept foreign cards — Good to know if you run out of data trying to find an ATM.
- ✓Get a data plan of at least 10GB — Google Maps, translation apps, and photos use more data than you expect.
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