1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7060225-f-896baa34-716b-4516-8cec-9d74f03ac9e0.png?width=336&height=448)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7060225-f-08d440f9-b074-4d4c-9804-76d304ef0fae.png?width=336&height=448)
Press the info icon next to the required price plan below "MOBILE PLANS".
![](http://wmstatic.global.ssl.fastly.net/ml/7060225-f-a3438716-19e5-410a-9827-2a54af31fb43.png?width=336&height=448)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7060225-f-5460a69c-d8d6-4c57-b0c4-c6449ed21b68.png?width=336&height=448)
2. Turn use of PIN on or off
Press the indicator next to "SIM PIN" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7060225-f-3d37f253-cb14-41e5-920f-38c288e8f893.png?width=336&height=448)
Key in your PIN and press Done.
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. You can get the PUK by calling customer services on 191 from a Vodafone mobile phone. If you're using a land line, you need to dial 03333 040 191. 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/7060225-f-59555ee5-35ac-43d3-9e1d-e410493e6723.png?width=336&height=448)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7060225-f-3d37f253-cb14-41e5-920f-38c288e8f893.png?width=336&height=448)