1. Find "More security settings"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7250324-f-aeb8eeab-2073-4ed0-bea5-4b04cfd94680.png?width=208&height=462)
Press Fingerprints, face data, and screen lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7250324-f-aa4e40ad-9e27-4835-85c0-034a511851e7.png?width=208&height=462)
Press Privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7250324-f-536c993f-d9e9-454d-a6cf-df0163065593.png?width=208&height=462)
Press More security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7250324-f-2a5081cf-e37b-4f56-a8e5-6e2484837e89.png?width=208&height=462)
2. Turn use of PIN on or off
Press the name of the SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7250324-f-961893cd-4619-4107-962d-146bc7d6d746.png?width=208&height=462)
Press the indicator next to "Lock SIM" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7250324-f-89effee1-899f-4a8f-b8b7-21e7f3d7e710.png?width=208&height=462)
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. The PUK can be obtained by contacting customer services. 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/7250324-f-2f454bc9-a8b3-4f87-9e57-b32ce7396fd9.png?width=208&height=462)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7250324-f-89effee1-899f-4a8f-b8b7-21e7f3d7e710.png?width=208&height=462)