Enter in Safe Mode in Android
Sometimes there are applications that can annoy the entire system of our smart phone. To debug Android from third-party software it is best to restart our device in safe mode. In this way all the applications we have installed from third parties will be disabled and only the native applications of the system will work. If we have several users we can also use them without problems.
To restart the device in safe mode:
Press the Power off button until the option to shut down appears.
Now on the screen, press and hold ‘Shut down’ until the warning to restart in safe mode appears and accepts the operation.