Yes. An ICY SIM eSIM works across Japan on KDDI/au, SoftBank, Rakuten Mobile and NTT docomo, as long as your phone supports eSIM and is carrier-unlocked. You install it before you fly and it connects when you land — no SIM shop at the airport and no roaming charges from your home carrier. Most travellers use about 500 MB a day — the 5GB / 30-day plan ($6) covers a week of moderate use.
Most visitors arrive at Narita or Haneda (Tokyo) or Kansai (Osaka). Coverage is excellent in cities, along the Shinkansen lines and even in Tokyo’s subway tunnels. Free Wi-Fi is common, but it won’t keep maps working between stations. Travelling as a group? Compare an eSIM each with a shared pocket WiFi in our Japan guide, or compare providers in best eSIM for Japan.
Stay connected in Japan the moment you arrive. No SIM card shops, no complicated setups — just scan and go.
High-speed 4G/5G on KDDI/au, SoftBank, Rakuten Mobile and NTT docomo. Fast, stable internet for navigation, streaming, and work.
Not installed your eSIM yet? Contact us within 24 hours of purchase for a refund.
Select your destination and data package for your trip.
Set it up on your device as per the instructions in the Email.
Your plan activates automatically upon arrival.
Stay connected abroad with eSIM
Choose a data plan that fits your budget perfectly.
Stay connected in 200+ countries with the ICY eSIM app
Stay connected without expensive roaming charges
Not installed yet? Contact us within 24 hours for a refund
If your eSIM hasn't been installed, or we couldn't provision it, you're covered — just contact us within 24 hours and we'll make it right.
Scan the QR code or download the app and enjoy seamless data in 200+ countries — no roaming fees, ever.
Quick answers before you travel to Japan
Yes. An ICY SIM eSIM works across Japan on KDDI/au, SoftBank, Rakuten Mobile and NTT docomo, as long as your phone supports eSIM and is carrier-unlocked. You install it before you fly and it connects when you land — no SIM shop at the airport and no roaming charges from your home carrier.
It connects to KDDI/au, SoftBank, Rakuten Mobile and NTT docomo. You get the same local 4G/5G coverage those networks give their own customers.
Plans start at $1.50 for 1GB valid for 7 days, up to 20GB for $25. You pay once — no contract and no subscription.
Maps and messaging use about 150 MB a day, adding social media and photos about 500 MB, and video or hotspot 1 GB a day or more. Most travellers use about 500 MB a day — the 5GB / 30-day plan ($6) covers a week of moderate use.
Most visitors arrive at Narita or Haneda (Tokyo) or Kansai (Osaka). Coverage is excellent in cities, along the Shinkansen lines and even in Tokyo’s subway tunnels. Free Wi-Fi is common, but it won’t keep maps working between stations. Travelling as a group? Compare an eSIM each with a shared pocket WiFi in our Japan guide, or compare providers in best eSIM for Japan.
ICY SIM plans are data-only, so you don't get a local phone number. Keep your home SIM active for calls and SMS, and use WhatsApp, FaceTime or iMessage over your ICY SIM data.
Yes — hotspot and tethering are supported, so you can share your data with a laptop or a travel companion. It uses your data allowance faster.
Install it at home over Wi-Fi before you leave. The plan's validity starts when you first use data on it, not when you buy or install it, so installing early doesn't cost you any days in Japan.
If your eSIM hasn't been installed yet, contact us within 24 hours of purchase. Once it's installed or any data has been used it's non-refundable — but we always refund provisioning failures, technical defects and duplicate charges.
