No sound on calls iphone 7

- No sound on calls iphone 7 plus
- No sound on phone calls iphone 7
- Iphone 7 no sound on calls speaker greyed out
- No sound during phone calls iphone 7
- No sound on iphone 7 when receiving calls
- Iphone 7 plus no sound on calls speaker greyed out
- Iphone 7 no sound on incoming calls
- Iphone 7 no sound
- Iphone 7 speaker not working