If you would like to use an eSIM on your device, you will need to check if your device is compatible. The guide below shows you how to check if your device is unlocked on an iPhone.
Checking My Device is Unlocked
1. If your device is on iOS 14 and above open Settings and go to General.
2. Tap on About.
3. Scroll to find the option Network Provider Lock.
If it says No SIM restrictions your device is unlocked and will be are able to download and use eSIMs.
If your device is locked, you will need to contact your mobile carrier to get your device unlocked. If your device was only recently unlocked, you may have to wait for the eSIM support to become available as your carrier might disable it for a period of time for security reasons.