1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ce409a18-7d60-452d-8cb4-900f2f3ea610.png?width=208&height=416)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f0013c2d-fb4e-4ab0-abbe-58547da14758.png?width=208&height=416)
Press Security & location.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1b832e57-fff2-41c3-bf07-ce347e16360b.png?width=208&height=416)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8d4c8cb7-9863-4841-a3d1-4fe4e4cff353.png?width=208&height=416)
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-e700e355-f29f-4fd5-81c5-0dd4147d470e.png?width=208&height=416)
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-e4263671-f456-4888-b791-f8dff7948b85.png?width=208&height=416)
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-e700e355-f29f-4fd5-81c5-0dd4147d470e.png?width=208&height=416)