![Google Pixel 4 XL](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-88a73d2a-b8a3-4bca-8d39-309d1088e734.png?width=150&height=320)
Google Pixel 4 XL
Android 10.0
1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-23264e8e-094e-4cbe-856c-2b9a4c86c66b.png?width=204&height=430)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e00d1eaa-8237-4da4-9be2-6e9e1d65fa24.png?width=204&height=430)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-bbb9885c-bc69-489c-bee5-83594258bc38.png?width=204&height=430)
Press Advanced.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ce192c47-9c47-47e7-8191-ac0235a54c9e.png?width=204&height=430)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e47a3ffb-15b9-4997-83d4-fe4117601053.png?width=204&height=430)
2. Turn use of PIN on or off
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-35076646-f094-4f8d-88c0-181308e48c81.png?width=204&height=430)
Key in your 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-87fe0445-f549-448b-97d0-1365314f59cd.png?width=204&height=430)
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-35076646-f094-4f8d-88c0-181308e48c81.png?width=204&height=430)