![Apple iPhone 15 Pro Max](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-cf357547-a755-45c8-a97a-ef06b1951946.png?width=150&height=320)
Apple iPhone 15 Pro Max
iOS 17
1. Find "Change PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f44299dc-4f7a-4300-9782-d4e0bd965755.png?width=212&height=458)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f65d0f07-b716-44a4-b09c-b5af5e7cd0ae.png?width=212&height=458)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-db435c30-31b3-462f-b32d-efe009dfe30c.png?width=212&height=458)
Press Change PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-97bad78b-e22e-4566-8572-d5b53170e0c2.png?width=212&height=458)
2. Change PIN
Key in your current 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-312a9a5e-238f-4d82-bae7-2480abac7e80.png?width=212&height=458)
Key in a new four-digit PIN and press Done.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-8a7e836d-e5d6-4ef3-8129-0be6d3d26192.png?width=212&height=458)
Key in the new PIN again and press Done.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a06fe03f-fc66-463a-aa95-e743bd08acc2.png?width=212&height=458)
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-97bad78b-e22e-4566-8572-d5b53170e0c2.png?width=212&height=458)