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Installing your eSIM takes under a minute, and most of these steps are done once. Choose your device type for the full step-by-step guide.

Install on iPhone

Covers iOS 26 and later, plus earlier versions

Install on Android

Samsung and other Android devices

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Before you start

  • Install before you travel. Downloading the profile requires an internet connection, so install at home while you have reliable Wi-Fi.
  • Confirm your device supports eSIM and is carrier-unlocked. See Device compatibility, or check your model against the full device list on our site.
  • Switch your data line only after you land — not before your flight.
Your eSIM will not be named “SimSIM” on your device.It appears under a local network’s name at your destination — this is normal. The eSIM you just installed always appears at the bottom of the line list.

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Alternative installation methods

If the standard install button doesn’t work for your situation — for example, you’re setting up a phone for someone else, or the camera on the target device isn’t working — you can install using a QR code or by entering the details manually.

Install via QR code

Scan a QR code from your device settings — useful when setting up someone else’s phone

Install manually

Enter the activation code by hand — when the camera on the target device isn’t working

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After installation

  • Keep your primary line active for calls and SMS, but turn off its mobile data so you don’t accumulate roaming charges from your own carrier.
  • Don’t delete the eSIM while the plan is still valid. A deleted profile cannot be reinstalled from the app.
  • You can check your remaining data at any time under Managing data in the app.

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Frequently asked questions

Every eSIM you install always appears at the bottom of the eSIM list on your device — so the eSIM you just installed will be the last one in the list, even though the name next to it is a local network’s name rather than “SimSIM”.
In most cases data roaming is switched off on the new line. Turn it on, and also confirm that the eSIM you set up is selected as your mobile data line.
Yes. As long as your primary line stays active and set as the voice line, calls and SMS will continue to reach you as usual.Note that calls and messages abroad are billed by your own carrier, according to your plan’s terms. Your SimSIM eSIM provides data only and does not affect those charges.
Install before your flight while you have stable Wi-Fi, since installation needs an internet connection. Switch your data line only once you arrive.
Confirm you have a stable internet connection, that your device supports eSIM, and that it is carrier-unlocked. If the problem persists, see Troubleshooting or contact support.