1. Find "Set up SIM card lock"
Slide two fingers downwards starting from the top the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8c00728c-e376-45cd-8011-9efdfba0cc63.png?width=208&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-18c49c43-e092-4555-a7fa-4611c9301a41.png?width=208&height=368)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-31e8e5d4-5a4e-4511-920e-8370ae6fc1cf.png?width=208&height=368)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3201a2b3-8f7d-4576-8750-eda3da89dea0.png?width=208&height=368)
2. Turn use of PIN on or off
Press Lock SIM card to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9a4c1aef-face-46e7-a391-64ad4bc2fbbf.png?width=208&height=368)
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-6fafd35a-3257-47e3-813b-08c1ebea5ac0.png?width=208&height=368)
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-a09c501c-3341-49c3-a6fb-93d30f404831.png?width=208&height=368)