![Samsung Galaxy S20 5G](http://wmstatic.global.ssl.fastly.net/ml/7150524-f-ef74f256-4ff3-44d4-a36f-ec6f5122b9e1.png?width=150&height=320)
Samsung Galaxy S20 5G
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/7150524-f-4f1d77dc-f024-45aa-b339-7ad634e5565c.png?width=204&height=456)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7150524-f-25f267bc-a63d-48b1-8c45-e2f2852a8603.png?width=204&height=456)
Press Biometrics and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7150524-f-6da503bd-3890-4ac7-8d4d-80b6be6ec39d.png?width=204&height=456)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7150524-f-5084641c-3b0d-4d01-8219-c022ce9f27e9.png?width=204&height=456)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7150524-f-48ae2255-691c-4d90-b7e3-12189b70dc20.png?width=204&height=456)
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/7150524-f-0c067716-5898-47a6-bd02-862e2af168f1.png?width=204&height=456)
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/7150524-f-1250eb43-efae-4a61-93e1-cfbba76063ae.png?width=204&height=456)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7150524-f-0c067716-5898-47a6-bd02-862e2af168f1.png?width=204&height=456)