![Apple iPad Pro 12.9 (2021)](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-00a6122b-5b39-412e-9212-c590edcc4948.png?width=150&height=320)
Apple iPad Pro 12.9 (2021)
iPadOS 16.1
1. Find "SIM PIN"
Press Settings.
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Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-32adc7de-1f59-406d-934c-f3c2b6c72b91.png?width=336&height=448)
Press SIM PIN.
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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-d28537fd-d4b2-4ced-8012-632f94895cd3.png?width=336&height=448)
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-4053eea3-ae0c-4903-9eb3-8602559ba2e4.png?width=336&height=448)
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-d28537fd-d4b2-4ced-8012-632f94895cd3.png?width=336&height=448)