Soft Reset Samsung Galaxy A7
Soft reset is always the quickest fix for many problems of Android world. If something is not correct on your device, you can follow the steps below and try to soft reset your Galaxy A7.
To do that, press and hold the power button at the right side of the phone. This will display a small menu. In this menu, everything else is blurred out except airplane mode, turn off and restart.
After that, tap the turn off button (usually at the top) and wait for a few seconds.