To turn off a Samsung Galaxy S21, there are two main ways:
- Press and hold the Power button and Volume Down button simultaneously for about 3 seconds until the power menu appears. Then tap "Power off" to turn off the phone.
- Swipe down twice from the top of the screen to open the full Quick Settings panel, then tap the Power icon in the top right corner. Choose "Power off" to shut down the phone.
Additionally, you can use Bixby voice assistant by holding the side button and saying "turn off my phone" if Bixby is set up. Also, in Settings under General Management, there is a Restart/Power off option. If the phone is frozen, pressing and holding the Power and Volume Down buttons until the screen goes black will restart it. These methods provide easy ways to turn off the Samsung S21 without confusion over the side key behavior changed by Samsung for Bixby integration.
