Lumia 640 "back" button and lockscreen issues
Two issue with my phone (1) if I'm playing a game or viewing picture, the back button no longer appears when I tap the lower screen. The only way to recover is to turn the phone off and back on. Issue (2) once a phone call starts, the screen goes black and does not return until the call is ended by the person on the other end, so I'm screwed if I want to place the call on speaker, end the call, or press "1" for English! Any ideas?
Two issue with my phone (1) if I'm playing a game or viewing picture, the back button no longer appears when I tap the lower screen. The only way to recover is to turn the phone off and back on. Issue (2) once a phone call starts, the screen goes black and does not return until the call is ended by the person on the other end, so I'm screwed if I want to place the call on speaker, end the call, or press "1" for English! Any ideas?