1. Find "Privacy"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-846f314a-ff76-4cdb-83a4-54c089633530.png?width=204&height=446)
Press Passwords & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ac4e6f5c-8680-4cba-8705-a72cb228b5cc.png?width=204&height=446)
Press Privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-acdbf56b-f6cc-4c5f-ba69-3613f7e8545a.png?width=204&height=446)
2. Turn use of PIN on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e7a1cb18-2f45-43f4-817e-bdf20974984a.png?width=204&height=446)
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a6a774fe-8698-4d01-be24-82b0480b8684.png?width=204&height=446)
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-9424cf25-24ff-4373-bbe3-5e695adeb22b.png?width=204&height=446)
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-a6a774fe-8698-4d01-be24-82b0480b8684.png?width=204&height=446)