![Samsung Galaxy A12](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-fd609ca4-0061-4ae4-b485-a797860dd513.png?width=150&height=320)
Samsung Galaxy A12
Android 10.0
1. Find "Set up SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-57c6043a-b9e4-4e32-9587-52130c062072.png?width=198&height=444)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-82d999c2-5484-4a11-b35e-f182512a9e1e.png?width=198&height=444)
Press Biometrics and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-aea3d2c5-f3b4-48d4-a82c-f81789d7f652.png?width=198&height=444)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d300fd70-00a9-4b35-97c1-7f74d9c951f9.png?width=198&height=444)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ca7ecb8a-5703-4b5b-acc5-e134d591ec7b.png?width=198&height=444)
2. Change PIN
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e683a056-0e8a-4032-9659-10a830e21db7.png?width=198&height=444)
Press Change SIM card PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e683a056-0e8a-4032-9659-10a830e21db7.png?width=198&height=444)
Key in your current PIN and press OK.
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-3d9636fb-cdda-4058-a579-a13417a13509.png?width=198&height=444)
Key in a new four-digit PIN and press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d0c4ae6a-1296-4dcc-b56d-bce978c72671.png?width=198&height=444)
Key in the new PIN again and press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-35d615b5-a833-42f6-80b4-0e01e0f07539.png?width=198&height=444)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e683a056-0e8a-4032-9659-10a830e21db7.png?width=198&height=444)