![Xiaomi Redmi 9AT](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-02d03c06-1caa-43c1-9a74-9694bf2e9824.png?width=150&height=320)
Xiaomi Redmi 9AT
Android 10.0
1. Find "Change SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-18b882b8-ed6f-4486-99e2-d6db67febf57.png?width=198&height=440)
Press Passwords & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-485acced-d30c-4b77-b64f-741de68ec82f.png?width=198&height=440)
Press Privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f1289a30-de85-42f0-bbb8-3b0d40df0237.png?width=198&height=440)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-bb27f89c-3138-4a44-a102-7bba31bf79b9.png?width=198&height=440)
Press Change SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-54463419-2cef-4c97-b0be-9875b412d9d1.png?width=198&height=440)
2. Change PIN
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-c21bde88-ae58-4f6a-bc55-d47f4f2c8bc5.png?width=198&height=440)
Key in a new four-digit PIN and press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-3c898b40-5ab2-44ac-8ac3-45afa175bde3.png?width=198&height=440)
Key in the new PIN again and press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f9a39b99-7ac6-4bd4-8192-d8134b965072.png?width=198&height=440)
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-54463419-2cef-4c97-b0be-9875b412d9d1.png?width=198&height=440)