14Chapter 1: BasicsTurning your ROG Phone on or offTurning your device onTo turn your device on, press and hold the power button until your device vibrates and starts up.Turning your device offTo turn your device off:1. If your screen is turned off, press the power button to turn it on. If your screen is locked, unlockthe device screen.2. Press and hold the power button, then when prompted, tap Power off.Sleep modeTo put your device in sleep mode, press the power button once until the screen turns off.Power keyNOTE: When your system is down, press and hold the Volume Down Key + Power Key simultaneouslyfor 8 seconds to restart your phone. If this doesn't work, try again by pressing and holding the keysagain for 12 seconds.