iPad (10th Generation)

Press Settings.

Press Mobile Data.

Press the info icon next to the required plan below "MOBILE PLANS".

Press SIM PIN.

Press the indicator next to "SIM PIN" to turn the function on or off.

Key in your PIN and press Done.

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 your finger upwards starting from the bottom of the screen to return to the home screen.