TLDR: microphone (across apps & when calling) doesn’t work on Bluetooth or on handset, only when on speaker or with plugged in headphones.
SO I’m having a mystery issue with my phone (microphone/speaker/Bluetooth)… Best guesses VERY welcome!
Two weeks ago I noticed my calls on Bluetooth were extremely muffled and so I would have to switch to handset. I spent a day factory resetting and tinkering with my Bluetooth device trying to fix this issue with no luck.
A week ago I began being told by people while calling on my headset that my voice sounded muffled. I myself noticed this when recording voice memos in the Messenger app, and listening back I do sound very muffled. I went through
#*#*66*#*# and tested both Microphone 1 and 2, both were muffled.
I started in safemode, inspected holes for dust, and restarted several times with no change.
I called someone in the morning (who told me I sounded muffled), got to work and the first call I made could neither hear me nor I them. I then called a second person on speaker phone who could hear me perfectly. I tested by voice recording on Messenger app with the handset, with Bluetooth attachment, and with plugged in headphones – only plugged in headphones worked. Some time throughout the day the quality has degraded to the point that I now cannot hear myself if filming myself talking or recording myself talking (without plugged in headphones – with headphones everything seems okay).
Today I turned off Data LTE, and purchased a new SIM card and swapped it out - still no luck.