The Japan eSIM
Travelers Choose.
Skip the SIM card queue. Buy your Japan eSIM online, activate on arrival, and get fast 5G/4G data across all of Japan - powered by the KDDI network.
Location
Kyoto, Japan
Powered by
KDDI
Coverage
99.9% of Japan
Data plans for every Japan trip.
Whether you're visiting for a weekend or staying a month, there's a Japan eSIM plan that fits. No contracts. No roaming fees.
Your Japan eSIM runs on KDDI - the world's fastest eSIM network, covering 99% of Japan's population
Everything you need to explore Japan freely.
Your phone is your best travel tool in Japan. A JapaneSIM eSIM on KDDI's nationwide network keeps it fast and reliable - from central Tokyo to remote mountain villages.
Navigate Japan with Confidence
From Shinkansen timetables to Tokyo subway maps - access live navigation and transit data the moment you land. Never get lost, never miss a train.
Break the Language Barrier
Order confidently at any restaurant, read any sign, ask for directions. Real-time translation works best with a fast, stable Japan data connection.
Post. Share. Remember.
Upload Mount Fuji photos and Kyoto reels without waiting. KDDI's 5G/4G coverage means your memories go live as fast as you make them.
Work from Anywhere in Japan
Reliable enough for Zoom, fast enough for file uploads. Whether you're in a Shibuya co-working space or a Hakone ryokan, your connection holds.
Get your Japan eSIM in 3 steps.
No SIM card. No waiting at the airport. Just fast, reliable data the moment you land.
Choose Your Plan
Pick the Japan eSIM data plan that suits your trip length. Receive your QR code by email - instantly, no waiting.
Scan & Install
Go to your phone settings and scan the QR code. Your Japan eSIM installs in under two minutes - no app, no SIM card needed.
Land & Connect
Switch on your eSIM when you arrive. It auto-connects to KDDI's 5G network across Japan - you're online before your bags arrive.
What Japan travelers are saying.
“Best Japan eSIM I've used. Coverage was perfect from Narita all the way to Okinawa. I was connected before I even left the arrivals hall - no pocket Wi-Fi, no stress.”
Sarah M.
14-Day Japan Trip
“Faster than my home broadband in Osaka. Used it for remote work the whole trip - video calls, file uploads, everything. Not a single dropout across two weeks.”
David K.
Digital Nomad
“Bought it at the departure gate, scanned the QR code on the plane, had full 5G signal as soon as we landed. Genuinely the easiest part of the whole trip.”
Elena R.
First-Time Visitor to Japan
Frequently Asked Questions
Get your Japan eSIM today.
Buy before you fly. Activate on arrival. Stay connected across all of Japan on KDDI's 5G network - from Tokyo to the countryside.