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How to unlock the sim card?

How to lock the SIM card of OPPO mobile phone, many people don't know how to lock it. Next, I will introduce how to lock the SIM card of OPPO mobile phone in graphic form.

1. First, find the setting item on the mobile phone desktop and click Settings.

2. Enter the setting interface and click other settings directly.

3. To enter other settings interfaces, you need to click Enter Device and Privacy.

4. Enter the device and privacy interface, and directly click the SIM card to lock.

4. Enter the SIM card locking interface, and you need to unlock the SIM card. On the SIM card lock page, enter the PIN code, and then click OK.

5. The lock was successful, so the SIM card was locked.