Before calling for support, you can first use the
Help app to troubleshoot or perform diagnostics on your phone.
This helps you in finding the problem cause, and in determining whether you can resolve the problem or you need to call for support.
From the Home screen, swipe up and then find and tap
Help screen, tap and then tap
Diagnostics tools to use a troubleshooting wizard to check the basic hardware functions.
You can also tap
Software updates to check for new software updates if available.
Software updates may contain bug fixes and feature improvements.