An installed eSIM may need a few settings changes before it can use data. Check these steps in order.

1. Confirm that the eSIM is enabled in your phone's SIM or mobile-network settings.
2. Set the MobileTopup eSIM as the line used for mobile data.
3. Turn on data roaming for the eSIM when the plan instructions require it.
4. Turn airplane mode on and off, or restart the phone, then wait a few minutes for the eSIM to register.
5. Keep network selection on automatic. If your plan documents name a network and automatic selection fails, try that network manually.
6. Only change the APN if the eSIM installation page or provider instructions specifically give you an APN value.

Do not delete the eSIM while troubleshooting. Open the eSIM order in MobileTopup to confirm its status and installation details. If it still does not work, contact support with the order ID, destination, phone model, and a screenshot of the mobile-data settings.