it is likely to be a hardware problem which a custom ROM will not fix.
To use all the neat features from the microG project, which allows you to use all features of your Android smartphone without those shitty, proprietary battery-consuming Google blobs, your system is required to support signature spoofing.
Right-click Volume button to open Sounds. Samsung GT-E1200Y,Mic, Microphone, Mic Problem, Mic Solution, Mic Jumpers, Mic Ways Latest Factory Firmware/Stock Rom/Released: Samsung Galaxy J3 SM-J320P Official Factory Firmware Flash File/Stock Rom Custom Rom Without Password Download Now the Alarm Bug in the linage os based ROMs can’t be solved, you may have tried clearing the app data, clearing the cache, and even tried changing the time settings, but this is not the solution to the Alarm Not working Bug in lineage os Based Custom ROMs.
This patch can fix microphone problem in CM12.Try using a different microphone, preferably the internal microphone, if available. I am wondering if the microphone went out and if the one in the front and back is some how connected together since neither work."In order to enable it you need the following: Microphone can be used with a USB DAC by setting DRASTIC_MIC_EN=1 and DRASTIC_MIC_NAME=”hw:#,#” in drastic.
After that every update has slowly but surely worsened battery life, heating while charging, screen refresh rate suddenly acting up, and now last but not least BOTH huge mic issues and unstable GPS. Mic problem in custom rom Click Apply, and OK.