Iam the owner of iphone 5s 16gb, and after back case and display replacement i have trouble with screen. I cant click corrcetly on upper corenrs. I
1st step i do, is replace from the old display all insulation tape,
2. place insulation tape on every conection (LCD, EARSPEAKER, and3rd)
2/3. DO NOT trun OFF your phone.
3. disamble the touch id and open the phone,
4. remove metal bracked (4 scruves)
5. disconect three conectors from display(WHEN IPHONE IS TURNED ON!!!)
6. wait a moment and place the connectors back,
7. unloc your iphone and try.
7/2 if everithing works, put bracket back, put back touch id and place it back.
8. that works for me !