Turn your device on and off and lock it.
In this tutorial, you will learn how to:
• Turn on device
• Turn off device
• Unlock device
• Lock and unlock device
Press and hold the Side button until the Apple logo displays.
Press and hold the Side button and the Volume up or down button until the slider appears. Drag the slider to turn your iPhone completely off.
Press the Side button then slide the bottom bar up. To lock iPhone, press the Side button.
Note: iPhone locks automatically if your device is idle for 30 seconds. To adjust the screen lock time, select the Settings app > scroll to and select Display & Brightness > Auto-Lock > select the desired lock time.