![OPPO Find X3 Neo](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-156f8620-844a-45d9-b2c9-ec2f2bb509fa.png?width=150&height=320)
OPPO Find X3 Neo
Android 11.0
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-acb900cb-c71b-434e-b377-bc12beb8439e.png?width=204&height=452)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-6d00cb5d-f28d-4a22-ab01-6496df063818.png?width=204&height=452)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d28f1943-bb36-412d-a9f9-30f1d7d10f57.png?width=204&height=452)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ae29fe88-b938-41cb-8e92-b0170f2c3214.png?width=204&height=452)
2. Turn use of PIN on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-86a1e637-5798-45d9-98d9-a4523db9ac4b.png?width=204&height=452)
Press the indicator next to "Lock SIM Card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-11cc88fd-6a11-486e-9f1a-557fca1157ab.png?width=204&height=452)
Key in your PIN and press the confirm icon.
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-9100b31c-f043-4858-8d2e-c64ab2a6665f.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-11cc88fd-6a11-486e-9f1a-557fca1157ab.png?width=204&height=452)