Turning your device off and on is called "restarting" your device. Restarting your device is a common first step in troubleshooting any device issues. No saved information will be lost during a restart.
1.
To turn on your phone, press and hold the Power button.
2.
To turn off your phone, press and hold the Power button.
3.
Tap Power off.
4.
You've completed the steps!
1.
To turn on your phone, press and hold the Power button.