My phone is white D5803 x3z.
Would be maybe useful if they could notice that this is affecting a certain buildweek of the white version or something
I am not a phone engineer, audio processing engineer or android developer. I might be wrong in all of the stuff I write. I test stuff in a practical manner and see what it produces.
I've always had this issue on my phone and was able to get rid off it by disabling noise cancellation/suppression.
The difference between having noise cancellation
enabled - nobody could hear me in actual calls
disabled - "crystal clear", "perfect" were the adjectives used.
Now that it is back with the latest android update, I did some practical tests what might be causing the issue.
So my understanding on the noise cancellation on here is that the phone uses 2 mics to filter out some of the "unwanted noise".
I downloaded sony audio recorder which allows you to record mono/stereo modes and decided to compare those two.
Mono is clear, stereo is crackling. I noticed that the cracking is almost absent if I put the phone on the table - any touching of the phone - speficically touching the screen produces a loud noise in the recording.
The voice prosessing could try to lower the high volume spikes and bundled with noise cancellation, it could lower the actual sent volume on phone calls due to these spikes.
You can also get the same result from the service menu tests (but it won't be a "stereo"). Under service tests, secondary mic.
Does noise cancellation use mono recording (=disables secondary mic)?
I will be taking mine to service center and report that the mics are getting interference from other components causing the phone to be unusable for calling.
Tape fix does not do anything, the interference comes from touching the phone, disabling "ok google" - nope, pcc fix does not work, tried it multiple times in the past. Factory reset did nothing.
edit: added info about reinstalling / pcc fix / voice "ok google" disabling / tape "fix"
