If you your phone is not working and you facing many problems. And you want to solve this problem You will go to play store and download the phone doctor plus app
After downloading the app then open the app .As you open the app you will showing permission then them do allow all permission .
phone doctor plus
After allowed permission you will show phone information and many options. You click on three dots in middle
After Click middle dots you can check any part of phone.
Outer hardware, multitouch, touch screen,Display check, earphone and mic, speaker check, headphone Jack, camera, flash, Home button, volume control, sleep button, Receiver and mic,