Can the phone fall back to the home SIM if the eSIM loses signal?

Check which line is supplying data

Open the SIM settings and read the mobile-data selection. Signal bars alone do not identify which allowance an app is using. Label Home and Travel clearly, especially if the phone shows a visited network’s name instead of the name you expect.

Review automatic switching

On iPhone, review Allow Cellular Data Switching; Android phones may offer different automatic-data features. Leave optional switching off if you want to keep mobile-data use on the selected travel plan. It is not a promise that the other line will rescue weak coverage, nor a block on calls and texts.

Work through the travel connection

Move somewhere with better reception if practical. Check that the current country is included, the profile is enabled, validity has started under its rules and data remains. Follow the supplied roaming, APN and network-selection instructions. Change one setting at a time.

Do not delete a downloaded profile as the first troubleshooting step. Reinstallation and transfer rules depend on the plan, and a working profile can be harder to recover once removed.

Choose a paid fallback deliberately

If you need the home network as a backup, first check its destination rate, pass trigger and allowance. Otherwise use trusted Wi-Fi or another suitable connection to contact support. A separate travel eSIM does not cancel charges from other enabled services.

Useful links

• Apple: using Dual SIM
• Apple: eSIM setup troubleshooting
• Graba SIM 支持