Best Japan SIM Card for Foreigners 2026: Full Guide

Which Japan SIM Card Should You Get as a Foreigner in 2026?

Quick answer: On arrival in Japan, a prepaid data SIM or eSIM (activatable with no proof of address) gets you online immediately. For a full plan with calls and a Japanese number, you usually need a residence card and sometimes a bank account. Foreigner-friendly carriers offer plans with no My Number, available right at the airport.

Between airport prepaid SIMs, eSIMs you can activate before landing, and long-term resident plans from virtual operators, the options are wider than most people expect. Here is how to choose the right one quickly.

3 types of Japanese mobile plans

Prepaid data-only SIM (arrival and short stay)

Available at Narita and Haneda airports or on Amazon Japan. No voice calls included. Best option for your first weeks before setting up a resident plan.

Operators: IIJmio Tourist, B-Mobile, JAPAN TRAVEL SIM, eConnect Japan.

Typical terms: 15 to 30 days, ¥2,000 to ¥4,500 depending on data volume (3 to 20 GB).

Long-term MVNO plans (residents)

For foreigners with a residence card (zairyu card) and a registered address at a ward office. Optional voice calls, capped or unlimited data.

Operators: IIJmio, OCN Mobile One, mineo, NURO Mobile.

Price: ¥850 to ¥3,000/month depending on data allowance. The most affordable long-term option.

Sub-brands of the big three operators

Discount sub-brands from NTT Docomo, SoftBank, and KDDI offer flat-rate plans at competitive prices.

• ahamo (NTT Docomo): 20 GB for ¥2,970/month.
• LINEMO (SoftBank): 20 GB for ¥2,728/month or mini 3 GB at ¥990/month.
• povo2.0 (KDDI/au): base plan at ¥0/month, then data add-ons purchased as needed.

2026 comparison: which SIM for which situation?

How to get a SIM card when arriving in Japan

Option 1: eSIM before departure

The most convenient option if your phone supports it. You activate the SIM from your home country before landing. Compatibility: iPhone XS and later, most Android phones released after 2019. Your device must be unlocked. eSIM providers for Japan: IIJmio Tourist, Airalo (Japan pack), Ubigi.

Option 2: Physical SIM at the airport

IIJmio, B-Mobile, and Sakura Mobile kiosks are in the arrival terminals at Narita (T1/T2/T3) and Haneda (T3). Bring your passport. Opening hours: approximately 7:00 AM to 11:00 PM.

Option 3: Online order after registration

Once you have registered your address at your local ward office (yakusho) and received your residence card, order directly on the operator's website. Delivery: 2 to 5 business days. Most MVNOs accept foreign credit cards.

Voice calls and international calls

Most prepaid SIMs do not include voice calls. For your daily communication needs:

• International calls: LINE (free between LINE users), WhatsApp, or Skype are standard among expats.
• Local voice calls (estate agents, banks, ward office): choose an MVNO plan with voice included. IIJmio and mineo offer voice add-ons for ¥550 to ¥880/month extra.
• Japanese special numbers: 0120- freephone numbers are accessible from mobiles; 0570- Navi-dial numbers may generate extra charges.

Unlock your phone before leaving home

Contact your home-country carrier to unlock your phone before departing. A SIM-locked device will not accept a Japanese SIM.

iPhones purchased outright from an Apple Store are usually already unlocked. Frequency bands to verify: B1, B3, B19 for Docomo-network operators (IIJmio, ahamo); B1, B3, B8 for SoftBank-network operators (LINEMO). Most recent smartphones support these bands.

For your SIM card in Japan, Sakura Mobile offers prepaid and postpaid plans with no address proof required, available from arrival at the airport and usable by foreigners without a My Number. (affiliate link)

For home internet in your apartment, see our guide to setting up utilities in Tokyo. For a complete move-in checklist, read our step-by-step guide to moving to Tokyo.