![Samsung Galaxy Z Flip](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-3674ef94-d1c0-4f2f-8587-67bf1eefbfa8.png?width=150&height=320)
Samsung Galaxy Z Flip
Android 10.0
1. Find "Set up SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7e233754-0ce2-412a-8d31-16145fd13566.png?width=186&height=452)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f9327226-280e-4d18-9321-3c9d2cfa2928.png?width=186&height=452)
Press Biometrics and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-113188a9-7570-452c-a050-b6d6940c652a.png?width=186&height=452)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f3064f9c-303d-4d71-b1d2-14c6fc8622b7.png?width=186&height=452)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-56b49355-0656-4e82-9ed4-fd995aa15a32.png?width=186&height=452)
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/7151223-f-edb06b42-f281-4df5-b89f-a188dda73862.png?width=186&height=452)
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. 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/7151223-f-238e4899-49e2-4b21-b6d5-86d2caeae22a.png?width=186&height=452)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-edb06b42-f281-4df5-b89f-a188dda73862.png?width=186&height=452)