If you're experiencing poor coverage on your mobile phone
If you're experiencing poor coverage on your mobile phone, you can enable Wi-Fi calling, which means you can make and receive calls using a Wi-Fi connection primarily instead of relying on the mobile network.
During an ongoing call, the quality of the Wi-Fi connection is continuously monitored. If the Wi-Fi signal becomes too weak or is lost, the call can automatically switch to the mobile network (if available) to avoid interruptions. So, the call happens via Wi-Fi, but if the connection is lost, the mobile network will take over (if available).
To enable this setting on your phone, follow the steps below:
Android
1. Select "Settings"
2. Tap "Connections"
3. Choose "Wi-Fi Calling"
4. Turn on Wi-Fi Calling by selecting "On"
5. Choose "Prioritize Wi-Fi Calling"