Millet 4 mobile phone on the black screen How to do? Millet 4 call on the black screen problem how to solve?

Millet 4 call on the black screen solution tutorial:

1, if you in the Millet mobile phone "distance sensor" open may lead to phone black screen, we want to solve this problem as long as the "Enable distance sensor" off.

Close proximity sensor method in the Millet 4 phone to find "System settings-Program-phone-Listen status-enable distance sensor-off" off.

2, call time do not block the photosensitive hole (handset left two), leave the ear to take off when the screen, you can try.

3, the sensor is your cell phone protection cover or foil blocking, this may also lead to a phone call black screen, we have to solve this problem can be dropped to see OH.