My VFD 700 Smart ultra 7 has an issue with sound recording on calls and Google Assistant. I can hear callers but they cannot hear me etc. Recording sound on Sound Recorder does work however. After extensive searches online these are the things I have tried without success.
1 Rebooting several times
2 Factory reset
3 Replacing the microphone sub board with a new one
4 Turning off/on all permissions associated with sound recording (WhatsApp, Phone, Google etc)
5 Trying all options in Google assistant (eg turn off noise supression etc)
6 Cleaning the microphone opening in the case
7 Disabling apps to see if they are conflicting
8 Start in Safe Mode to see if installed apps were conflicting
One final thing: if I turn on speaker phone during a call then callers can hear me OK.
There has been much written online about this issue with Android phones but none of the solutions work for me. Have I missed aything here?