![Samsung Galaxy S21+ 5G](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-032ce11e-9f81-474c-8174-5412829aef58.png?width=150&height=320)
Samsung Galaxy S21+ 5G
Android 11.0
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-dadd74e0-d502-4515-a803-0b1f0188f4a9.png?width=206&height=456)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-757fc35f-f21a-4cb4-860a-e9c9f3bef234.png?width=206&height=456)
Press Biometrics and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-61cee3d7-7133-4af3-a493-a3cbe69384ec.png?width=206&height=456)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-3a2207ac-8f60-45d9-a8a4-1d4ad49846af.png?width=206&height=456)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-c1e3a87b-745b-418f-a438-0879ea9ae29f.png?width=206&height=456)
2. Turn use of PIN on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ed71b6bf-9f95-4172-b730-0df185aa895c.png?width=206&height=456)
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ed71b6bf-9f95-4172-b730-0df185aa895c.png?width=206&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/7151223-f-80ac9ed1-775d-4663-98c7-bea16acc2726.png?width=206&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/7151223-f-ed71b6bf-9f95-4172-b730-0df185aa895c.png?width=206&height=456)