Calls go to voicemail
Check your Do Not Disturb settings:
1.
Look for   in your status bar. If you see it, then your phone is sending calls to voicemail so you’re not 
interrupted. To have your phone ring for incoming calls, open quick settings and touch   to turn off 
Do Not Disturb.
2. Check your schedules for Do Not Disturb and delete any you don’t want.
3. If you're using Bedtime mode but don't want to send calls to voicemail when you're sleeping, touch 
Settings > Digital Wellbeing & parental controls > Bedtime mode > Customize and turn Do not 
Disturb for Bedtime mode off  .
4. You can start Do Not Disturb by placing your phone face down on a surface. If you don't want to send 
calls to voicemail when your phone is face down, go to Settings > Sound & vibration > Advanced > Flip 
for DND and turn it off  .
Fix issues : Call and SIM issues 293