SIM cards and eSIM in Japan
SIM cards and eSIM in JapanWhich carriers matter, what buying a SIM involves, and when an eSIM is the smarter move.
Mobile internet eSIM Best option when traveling
Guac
RecommendedReliable mobile internet at better prices than most travel eSIMs, with polished iOS and Android apps and support for making and receiving phone calls.
Airalo
One of the biggest travel eSIM brands, with a very large destination catalog.
Holafly
Known for unlimited-data plans in many destinations, at a higher price per gigabyte.
Buying a local SIM card ID registration required
- Bring your passport; the seller registers the prepaid SIM during activation.
- SoftBank prepaid tourist SIM includes 3GB for 30 days and costs around $11.50.
- Airport counters and city carrier stores are the easiest places to buy; confirm activation before leaving.
- Local eSIM is available and follows the same identity rules as a physical SIM.
Most tourist plans are data-only, so services that require a local number or SMS may not work.
Local carriers
NTT Docomo
Best choice for broad coverage, including rural areas.
SoftBank
Tourist-friendly choice with a straightforward purchase process.
au (KDDI)
A solid alternative; compare current prepaid offers before buying.
Tourist MVNOs
Tourist-friendly choice with a straightforward purchase process.
Frequently asked questions
Do I need my passport to buy a SIM card in Japan?
Bring your passport; the seller registers the prepaid SIM during activation.
What is the best eSIM for Japan?
Guac eSIM covers Japan with data plans starting from $0.58 per GB and instant activation, so your phone is online the moment you land. Airalo and Holafly are popular alternatives.