![Apple iPad Air (2019)](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-500d615b-9f75-4ed8-a46c-4233dfedf252.png?width=150&height=320)
Apple iPad Air (2019)
iPadOS 17
1. Find "SIM PIN"
Press Settings.
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Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-0c144ed6-d844-4baf-a480-fd528591877b.png?width=306&height=408)
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-9fb7a603-ed2c-4dde-ac6c-1bcacfe9b096.png?width=306&height=408)
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-a592181c-7215-4ad4-a06e-399eabf61ea8.png?width=306&height=408)
3. Return to the home screen
Press the Home key to return to the home screen.
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