![TCL 403](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-1f1388b5-356e-4f8a-af3a-e0ecb346ebef.png?width=150&height=320)
TCL 403
Android 12 (Go edition)
1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-2ae7371b-fe23-4b23-9f7c-ef6b3ab57beb.png?width=208&height=416)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-a9e9874a-ddc7-414f-9487-02ebf6a272d8.png?width=208&height=416)
Press Security & biometrics.
![](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-28a3db87-0078-4aa0-a6b0-d6aa37e84217.png?width=208&height=416)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-c144518e-14a1-458a-a829-5f6e0c99104c.png?width=208&height=416)
2. Change PIN
Press Change SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-d3b58e8c-33ea-44c2-8bae-2a9168b878d8.png?width=208&height=416)
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/7060324-f-351b444e-ac5a-4852-8706-ac0e5dd315ed.png?width=208&height=416)
Key in a new four-digit PIN and press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-d02b3eea-c48e-4717-9a0d-abfc9bf7fb62.png?width=208&height=416)
Key in the new PIN again and press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-c899a9be-f336-4d25-b6f5-c98dbde03ad6.png?width=208&height=416)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7060324-f-d3b58e8c-33ea-44c2-8bae-2a9168b878d8.png?width=208&height=416)