1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-575a1223-a6b7-48ab-9a4b-21189040fd4a.png?width=200&height=432)
Press Security & privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e0604733-8c02-41fb-a7e5-e64af68020f2.png?width=200&height=432)
Press More settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8b60dd6a-06f0-4ad8-933a-a9df4309c15e.png?width=200&height=432)
Press Encryption and credentials.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5e2be395-8904-4acd-8a41-6fd3c70603f7.png?width=200&height=432)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-132b7428-67eb-472a-b15c-8193ffe412b5.png?width=200&height=432)
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/7140723-f-2028dce6-c8b0-4a4b-99f6-358613b3a13b.png?width=200&height=432)
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/7140723-f-ea9ce7cd-f03e-4c33-a565-ee52682cf158.png?width=200&height=432)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2028dce6-c8b0-4a4b-99f6-358613b3a13b.png?width=200&height=432)