Microphone problem in normal call mode only
Can someone please heeeelp me, I have a Samsung s4 I9505 that I bought with a problem:
When I call someone I can hear perfectly but the other person hears a crackling sound and almost no sound but ONLY IN NORMAL CALL mode, when in SPEAKER it seems to work just fine, also with the headset the crackling sound persists.
Things I have tried:
Restarting, factory reset
Different firmware like Kitkat 4.4 and Lollipop 5.01
Changing the charge dock with the microphone
Is there another microphone that is activated while on speaker mode than on normal call or what is the difference between normal call and speaker mode?
Questa è una buona domanda?