Galaxy S23

Press and hold the Side key until your cell phone is turned on.

If you're asked to key in your PIN, do so and press OK.

If an incorrect PIN is entered three times in a row, your SIM card will be blocked. To unblock your SIM card, you'll need to key in your PUK. The PUK can be obtained by contacting customer services. Please note: If you key in the wrong PUK ten times in a row, your SIM card will be blocked permanently. In this case, you need a new SIM card from T-Mobile.

Slide two fingers downwards starting from the top of the screen.

Press the power off icon.

Press Power off.

Press Power off.