In order for your Simtaly eSIM to work, data roaming must be activated for your eSIM. This is the only way your device can connect to the mobile network abroad and use mobile data. Make sure that data roaming is deactivated for your regular SIM card, as otherwise you may incur unwanted costs.
Android
(The designations may vary slightly depending on the manufacturer – e.g., Samsung, Google, Xiaomi –.)
Open settings .
Connections or Network & Internet select.
Tap on mobile networks or mobile network .
Data roaming or activate roaming to switch on.
Confirm any warning message .
Tip: Ensure that Mobile Data is also enabled – otherwise roaming will not work.
iPhone (iOS)
Open settings .
Tap on Mobile Network or Mobile Data.
Select data options
Activate data roaming
If you are using multiple SIMs (e.g. a physical SIM and the Simtaly eSIM ):
→ Settings → Mobile Network → [select your eSIM] → enable data roaming.