iPhone 14

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

Slide your finger upwards starting from the bottom of the screen.

If your SIM card is locked, key in your PIN 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.

Simultaneously, press and hold the Side button and the Bottom volume key until the power off icon is displayed.

Press and drag the power off icon right.