Japan eSIM Data Plans
From $1.54/GB
Looking for the cheapest eSIM data plan for Japan? Citrus Mobile offers wholesale pay-as-you-go rates starting from just $1.54 per GB on KDDI Corporation. Choose from 4 networks. No contracts, no expiration, and free eSIM activation.
Available Networks in Japan
You get the fastest speeds each network offers — the same 4G/5G experience as a local customer.
How much data do you need?
Trip length
Usage style
Frequently Asked Questions
What is the best eSIM for Japan?
Citrus Mobile offers the cheapest eSIM data for Japan at wholesale rates. The most affordable network is KDDI Corporation at $1.54/GB. You pay only for the data you use with no contracts or expiration dates.
How much data do I need for a trip to Japan?
Most travelers use 1–3 GB per week for messaging, maps, and social media. Heavy users streaming video may need 5–10 GB. With Citrus Mobile’s pay-as-you-go pricing in Japan, you never overpay — just top up your wallet and use what you need.
Does my eSIM work as soon as I land in Japan?
Yes! We recommend installing your eSIM before your trip while on Wi-Fi. Once you land in Japan, simply enable data roaming and your eSIM connects to a local network automatically. No waiting, no activation required.
What networks does Citrus Mobile support in Japan?
Citrus Mobile connects to 4 networks in Japan: KDDI Corporation, Rakuten, DOCOMO, SoftBank. You get the same 4G/5G speeds as local customers, with rates starting at $1.54/GB.
How do I top up my eSIM balance for use in Japan?
Simply log into your Citrus Mobile account and add funds starting from $4. Your balance works in Japan and 200+ other countries — one wallet, one eSIM, worldwide coverage. Get up to 30% bonus credit on larger top-ups.
More eSIM Destinations in Asia
Top up your wallet to start using data in Japan and 200+ other countries