I have this same problem: I cannot do the following thing:
- hear/talk on calls; the speaker icon is just grayed out.
- connect to facetime unless on my Bluetooth headphones
- No audio collected on video on forward/face viewing camera
- Use siri
- Take voice memo
- Dictate using powermic mobile for work
- Listen to amazon music?
- Headphones that plug into the charging spot will not play any audio or make calls/use microphone.
What does work:
- You-tube/Netflix with sound from phone
- Old videos with sound from phone
Attempts to fix without success
- Restarted phone x 5
- Took sim out and put back in
- Hard reboot
- Factory reset
Only success to make a call was: have device forget my Bluetooth headphones, repair the device and made a call. Was able to transition to facetime while still using the Bluetooth for audio, but no audio when disconnected the Bluetooth speaker.
Therefore, my iPhone is currently a slightly functional computer that can send texts. I hope they fix this VERY soon. I just spent 60 min on the phone with apple help, and all the diagnostics returned without obvious error. Good luck everyone.