Galaxy a07 has proximity sensor serious issue on call, when you receive the call or dial a number and place your mibile on ear, the screen didn't off, and while sometimes screen turn off on call then it can't wakeup, you need to press power button to turn on screen, theproximity sensor is not working in samsung galaxy a07.
I have similar mic related problem with Samsung A07. The phone requires a reboot or reset (settings) before the mic starts working normally. After some time (an hour or so) it goes back to not functioning. It works fine during cell phone calls or WhatsApp calls but fails to record in voice recorder and WhatsApp audio and video messages unless it's rebooted or reset. Can't find any help on the internet.
