![OPPO Reno4 Pro 5G](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-2c7a8924-0b94-4bef-bed0-ec6e59fbb001.png?width=150&height=320)
OPPO Reno4 Pro 5G
Android 10.0
1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-dcb3cc6d-4af6-4520-afef-1cf345ae8870.png?width=204&height=452)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ce341a3d-e91b-433c-aeb7-6e304666366d.png?width=204&height=452)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-71512d96-1e1f-4d8c-b3fc-f0e4de437264.png?width=204&height=452)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-0ee20ebe-7fec-41c9-83b6-c31e8a18f702.png?width=204&height=452)
2. Change PIN
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d18d22ab-c0e1-455c-9cac-2042f46cfefb.png?width=204&height=452)
Press Change SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ad98871c-24f6-4f56-b003-277ef07c7c49.png?width=204&height=452)
Key in your current 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-7b13d191-e585-4c63-a062-0dbf77f9ed3e.png?width=204&height=452)
Key in a new four-digit PIN and press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e5748a22-269f-44c5-8f2a-e3db27a165dd.png?width=204&height=452)
Key in the new PIN again and press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-40abfb4a-9858-4bd0-89c5-8064a571516d.png?width=204&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-ad98871c-24f6-4f56-b003-277ef07c7c49.png?width=204&height=452)