# How to install an eSIM on iPhone and Android

Updated 12 November 2026. Page: https://findbestesim.com/blog/how-to-install-an-esim

Buy the eSIM, then **scan its QR code from your phone's settings, on Wi-Fi, before you leave**. When you land, choose the eSIM for mobile data and turn on data roaming for it. Your own number keeps working for calls and texts.

## On iPhone

1. Open **Settings**, then **Cellular** or **Mobile Service**, then **Add eSIM**.
2. Choose **Use QR Code** and scan the code the provider sent you.
3. Give the line a name, like "Travel", and keep your own line for calls and texts.
4. When you land: in **Cellular Data**, pick the travel line, and turn on **Data Roaming** for it.

## On Android

1. Open **Settings**, then **Network & internet** or **Connections**, then **SIMs** or **SIM manager**.
2. Tap **Add eSIM** or **Download a SIM** and scan the QR code.
3. When you land: set **Mobile data** to the eSIM and turn on **Roaming** for it.

Menu names change between brands and versions, but the steps are the same.

## If something goes wrong

- Most QR codes work only once: do not delete the eSIM after installing it.
- No signal after landing? Check that data roaming is on for the eSIM line, then restart the phone.
- Still nothing? The provider's support can check the eSIM from their side.

## Questions

### Can I install an eSIM before my trip?

Yes, and it is the best time: on Wi-Fi at home. Many plans only start counting days when they first connect abroad.

### How do I know if my phone supports eSIM?

On most phones, dialling *#06# shows an EID number when eSIM is supported. The phone must also be unlocked.

### Do I need to turn on data roaming?

Yes, for the eSIM line: a travel eSIM uses local networks as a roaming partner. Leave roaming off on your own line if you want to avoid its charges.

## Related

- [Travel eSIM, roaming or local SIM?](https://findbestesim.com/blog/esim-vs-roaming-vs-local-sim)
- [Find the cheapest eSIM for your trip](https://findbestesim.com/destinations)

findbestesim is run by the owner of Wigoo, Yapsim, Fizztrip and Olalatrip, ranked by the same rule as every other provider. Ranking rule: https://findbestesim.com/how-we-rank