Skip to content
reissaa
Mountain lake and autumn forest in the Japanese Alps

How to install an eSIM on your iPhone

eSIM works on iPhone XS, XR and newer models. You need wifi and the QR code you received from Reissaa.

Updated 9 November 2026

Install with a QR code

  1. Open the QR code on another screen

    Open the code on a computer or another phone, for example. Connect your iPhone to wifi.

  2. Scan the code with the Camera app

    When Mobile Plan Detected appears on the screen, tap it.

  3. Add the plan

    Tap Continue and then Add Mobile Plan. Give the plan a label, for example Reissaa.

  4. Keep your own number active

    When the phone asks for a default line, choose your own plan for calls and messages. You can leave mobile data on your own plan for now and switch it to the Reissaa eSIM when you arrive. Installation is now done.

When you arrive

  1. Turn on the Reissaa eSIM

    Open Settings and Mobile Service (or Mobile Data on older iOS versions), select the Reissaa eSIM and turn on Turn On This Line.

  2. Select the eSIM for mobile data

    Under Mobile Data, choose the Reissaa eSIM. At the same time, turn off Allow Mobile Data Switching so the phone does not switch data back to your own plan.

  3. Turn on data roaming for the eSIM

    A travel eSIM usually needs roaming switched on, even though you are using it for data. It does not add any charges on top of your plan.

  4. Switch off data on your own plan

    Turn Data Roaming off on your own plan to avoid data charges from your carrier.

Get your data ready before you go

See plans and prices for 89 destinations.

Browse destinations

Frequently asked questions

Does the iPhone 11 have eSIM?

Yes. The iPhone 11 and all newer iPhones support eSIM, as do the iPhone XS and XR.

Does the iPhone work as a dual SIM?

Yes. You can use your own plan and the Reissaa eSIM at the same time, so your own number stays active.

Can I make calls with my own number?

Yes, if you keep your own plan switched on. Calls and messages are charged at your own carrier's rates, and outside the EU even incoming calls can cost money. The Reissaa eSIM includes data only.

Does WhatsApp work?

Yes. WhatsApp and other apps use data, and your familiar number stays in the app.

How do I check that my phone supports eSIM?

Open Settings, then Mobile Data (or Cellular). If you see Add eSIM, your phone supports it. eSIM support is more limited on iPhones sold in mainland China.

Next

If the internet is not workingThe most common problems are solved with a few settings.How eSIM worksA short explanation of eSIM and the SIM card.Does my phone support eSIM?Find your model in the list before you buy.