![Apple iPad Pro 11 (2021)](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-27bbfae4-65b1-4b7f-938a-5978c7163083.png?width=150&height=320)
Apple iPad Pro 11 (2021)
iPadOS 16.3
1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-03f78879-d029-4669-be00-73dffae0f423.png?width=312&height=446)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-07278bfe-608d-4642-8331-a4ec574de654.png?width=312&height=446)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-06c4f344-d5d0-4d67-82a4-657f79c0903a.png?width=312&height=446)
2. Turn use of PIN on or off
Press the indicator next to "SIM PIN" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-6c39564a-7323-4e73-9ded-36b16ce30679.png?width=312&height=446)
Key in your PIN and press Done.
If an incorrect PIN is entered three times in a row, your SIM will be blocked. To unblock your SIM, you'll need to key in your PUK. You can get the PUK by calling customer services on 191 from a Vodafone mobile phone. If you're using a land line, you need to dial 03333 040 191. Please note: If you key in the wrong PUK ten times in a row, your SIM will be blocked permanently. In this case, you need a new SIM from Vodafone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9a3f84ef-0b8c-4d19-a05b-5b0a903230b8.png?width=312&height=446)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-6c39564a-7323-4e73-9ded-36b16ce30679.png?width=312&height=446)