2026-06-21·7 min

Best Japan SIM Card for Foreigners 2026: Full Guide

IIJmio, ahamo or povo2.0: compare Japan's best SIM cards and phone plans for foreigners arriving in 2026, with setup steps and provider recommendations.

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

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?

Situation	Best option	Approximate cost
New arrival, under 1 month	IIJmio Tourist 30-day SIM	¥4,000
No fixed address yet	povo2.0 base ¥0 + data packs	¥330 per GB
Resident, minimal budget	IIJmio 2 GB plan	¥850/month
Resident, moderate data use	ahamo 20 GB	¥2,970/month
Family with multiple lines	IIJmio family discount	Discount per additional line

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 home internet in your apartment, see our guide to [setting up utilities in Tokyo](/blog/setting-up-utilities-tokyo-apartment). For a complete move-in checklist, read our [step-by-step guide to moving to Tokyo](/blog/moving-to-tokyo-checklist-2026).

Frequently Asked Questions

What is the best SIM card for foreigners living in Japan?+

For long-term residents, the best options are: IIJmio (reliable, affordable at 2,000-3,000 JPY/month), Y! Mobile (Softbank network, English support, 2,000-4,000 JPY/month), and Rakuten Mobile (cheapest unlimited data at 3,278 JPY/month). All require a residence card and Japanese bank account or credit card. Avoid tourist SIMs for stays over 3 months.

Can foreigners get a SIM card in Japan without a residence card?+

Tourist data-only SIMs are available without a residence card (IIJmio Tourist SIM, Docomo data SIM). However, voice SIMs (with phone number) require a residence card. If you are waiting for your residence card, a tourist SIM bridges the gap for the first weeks.

How long does it take to get a SIM card in Japan?+

Physical SIMs purchased at electronics stores (Yodobashi, BIC Camera) or convenience stores are available immediately. Online SIM applications take 3-7 business days for delivery. eSIMs from IIJmio or Rakuten can be activated within hours of online registration if you have a residence card and payment method ready.

What documents are needed to buy a SIM card in Japan?+

For a resident SIM: residence card (zairyu card), valid credit card or Japanese bank account, and a Japanese address. Store staff will photograph your residence card for verification. Some providers also accept a passport with a valid long-stay visa stamp if your residence card has not yet been issued.

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