eSIM plans for Japan
The best-value plan for each size, duplicates and overpriced options are hidden automatically.
A Japan travel eSIM from Buy Crypto Sim gets you online the minute you land, no roaming charges and no SIM card to swap. 54 plans cover Japan, starting at $8.70, with up to 50 GB of data and validity up to 365 days. Buy online, get your QR code by email, and scan to connect.
Japan 2GB/Day FUP1Mbps
Japan 1GB 7Days
Asia-20 1GB 30 Days
Japan & South Korea 3GB 30Days
Japan 10GB 30Days (IIJ)
Japan 20GB 30Days (IIJ)
Asia-20 20GB 90 Days
Asia-20 50GB 180 Days
Global (120+ areas) 1GB 365Days
Show all 54 plans for Japan
Japan 2GB/Day FUP1Mbps
China mainland & Japan & South Korea 1GB/Day
Asia (20 areas) 1GB/Day
Asia (12 areas) 1GB/Day
China mainland & Japan & South Korea 2GB/Day
Global (120+ areas) 1GB/Day
Asia (20 areas) 2GB/Day
Asia (12 areas) 2GB/Day
Global (120+ areas) 2GB/Day
Asia (12 areas) 3GB/Day
Japan & South Korea 10GB/Day
Japan 1GB 7Days
Japan & South Korea 1GB 7Days
China mainland & Japan & South Korea 1GB 7Days
Asia (12 areas) 1GB 7Days
Asia-20 1GB 7 Days
Asia (20 areas) 1GB 7Days
Global139 1GB 7Days
China mainland & Japan & South Korea 3GB 15Days
Asia (12 areas) 3GB 15Days
Asia-20 3GB 15Days
Asia (20 areas) 3GB 15Days
Asia-20 1GB 30 Days
Japan & South Korea 3GB 30Days
Japan 10GB 30Days (IIJ)
China mainland & Japan & South Korea 3GB 30Days
Japan 20GB 30Days (IIJ)
China mainland & Japan & South Korea 5GB 30Days
Asia (12 areas) 3GB 30Days
Asia (20 areas) 3GB 30Days
Asia-20 3GB 30Days
Global (120+ areas) 3GB 30Days
Japan & South Korea 10GB 30days
Asia (12 areas) 5GB 30Days
Asia (20 areas) 5GB 30Days
Asia-20 5GB 30 Days
China mainland & Japan & South Korea 10GB 30Days
Global139 3GB 30Days
Asia (12 areas) 10GB 30Days
Asia (20 areas) 10GB 30Days
Asia-20 10GB 30Days
China mainland & Japan & South Korea 20GB 30Days
Global139 5GB 30Days
Global (120+ areas) 10GB 30Days
Asia (12 areas) 20GB 30Days
Asia-20 20GB 30Days
Asia (20 areas) 20GB 30Days
Global139 10GB 30Days
Global (120+ areas) 20GB 30Days
Asia-20 20GB 90 Days
Global (120+ areas) 20GB 90Days
Asia-20 50GB 180 Days
Global (120+ areas) 1GB 365Days
Global139 1GB 365Days
Mobile networks in Japan
In Japan, your Buy Crypto Sim eSIM connects to NTT docomo, Rakuten Mobile, KDDI/au and SoftBank on 5G, selecting the strongest available signal automatically. Personal hotspot & tethering is supported.
Using an eSIM in Japan
- • Works on any eSIM-capable, carrier-unlocked phone.
- • Data-only, keep your own number for calls and texts.
- • Activates on arrival; validity starts on first connection in Japan.
- • Delivered instantly by email as a QR code, nothing to ship.
Japan eSIM, FAQ
Do I need an eSIM for Japan?
If you want mobile data in Japan without paying expensive roaming fees, a travel eSIM is the easiest option. You install it before you leave and it connects automatically when you arrive.
Will my phone work with a Japan eSIM?
Yes, as long as your phone is eSIM-capable and carrier-unlocked. Most phones from 2018 onward qualify (iPhone XR/XS and newer, recent Samsung Galaxy and Google Pixel). Dial *#06#, if you see an EID, you're good to go.
When does my Japan eSIM start?
Your validity period begins the first time the eSIM connects to a network in Japan, not when you buy it. Install it before you travel and it activates on arrival.
Can I keep my phone number in Japan?
Yes. The eSIM runs alongside your normal SIM and is data-only, so you keep your home number for calls and texts while using Buy Crypto Sim's eSIM for data in Japan.
Which mobile network does the eSIM use in Japan?
In Japan, your Buy Crypto Sim eSIM connects to NTT docomo, Rakuten Mobile, KDDI/au and SoftBank on 5G. Your phone automatically selects the strongest available signal, and personal hotspot / tethering is supported.