Japan eSIM
Land in Japan already online. Install your Roamis eSIM before you fly and connect the moment you arrive — no SIM swap, no roaming bills.
- Delivered in minutes
- Refund if it won’t install
- Keep your number
Japan eSIM plans
Choose how many days you’ll travel — validity starts when you connect, not when you buy.
- 今のスマホそのまま、SIM交換不要
- 到着後すぐ自動接続
- 明瞭な料金、隠れた費用なし
- 決済後QRを即時発行
- 24時間チャット相談
- 未開通なら90日全額返金
即時 — メールでQR送付
購入後90日以内に開通
購入後にeSIMを開通（QRを閲覧）していなければ、90日以内に全額返金されます。
Select your plan
毎日1GB高速 · 使い切り後は無制限（最大128kbps）
Why travelers choose Roamis
Four things that actually matter on a trip.
Reliable
We connect through leading local operators, so you get a stable signal from the moment you land.
Fast
Delivered to your inbox in minutes with a QR you can install before you even leave home.
Simple
One-touch setup — scan, install, done. No SIM tray, no store visit, no roaming menus.
Global
One account for dozens of destinations. Top up or add a new country whenever your plans change.
Connected in three steps
From checkout to online in minutes.
Buy & receive
Pick your plan and get your eSIM QR by email within minutes.
Install
Scan the QR and add the eSIM to your phone before you fly.
Land & connect
Turn on the line when you arrive — you’re online instantly.
Frequently asked questions
Yes. Roamis connects through major Japanese networks, so you’re covered in Tokyo, Osaka, Kyoto, Hokkaido and beyond, including most rural and transit areas.
Validity starts when you install and connect in Japan — not when you buy. Set it up before you fly and it begins counting from your first connection on arrival.
Yes, you can share your connection to a laptop or another device. Heavy tethering may be subject to the fair-use terms shown on the plan.
No. The eSIM runs alongside your existing SIM, so you keep your number for calls and texts while using Roamis for data.
Get connected before you pack
Set up your travel eSIM today and land already online.
Choose a plan