Japan eSIM
No SIM swap · Buy & go · Scan to install
Plan Type
Network
Data
Days
Need a custom duration? Chat on WhatsApp →
Selected Plan
500MB/day / 1 days
NT$24
- 500MB/day high-speed, then throttled (no cutoff)
- KDDI / Softbank
- Days are counted in 24-hour blocks from activation
- No physical SIM swap · Scan to install
- Must be activated within 60 days of purchase
About Japan eSIM
Roava's Japan eSIM is built for travelers who want data the moment they land. No physical SIM to swap, no pocket WiFi to rent — scan the QR code once before you fly and you're online as soon as you switch your phone on.
There are currently 466 plans for Japan, from 1 to 31 days, starting at NT$24 — covering everything from a short city break to a long business trip.
Network Coverage in Japan
Runs on native local carrier networks, so you get the same signal quality as a local number — stable across cities and major tourist areas.
Truly unlimited plans available: no data cap, no throttling — maps, social, streaming and AI tools all work normally.
Which carrier to pick in Japan?
- KDDI: Best balanced speed & coverage in Japan's major cities
- Softbank: Fastest downloads in urban Japan; ideal for streaming
- NTT DoCoMo: Widest coverage in Japan; best in rural areas & subways
Based on Opensignal, Ofcom and other mobile network experience reports (2025–2026)
How to use your Japan eSIM
- Order online. Your QR code arrives by email within 3 minutes of payment.
- Scan the QR code while still on WiFi before you depart to install the eSIM.
- On arrival in Japan, turn on mobile data and switch to the Roava line.
Install before you leave home — on landing you only need to switch lines, no WiFi hunting required.