More like this? Subscribe

If the SIM PIN query is activated, the PIN of the SIM card is queried every time the Oppo Smartphone is started, and if the SIM lock is (not) desired, it can be activated or deactivated in the security settings.

Note: The current PIN is required to activate or deactivate the SIM PIN request! Without a PIN, it is not possible to change the function.

Android 11 | ColorOS 11.0
Step 1: Tap on  Settings
Step 2: Tap on  Security
Step 3: Tap on  SIM card lock
Step 4: Choose a  SIM card   (Dual SIM)
Step 5: Enable or disable  Lock SIM card
Step 6: Enter the  PIN  and tap  Save
  1. Tap on Settings
  2. Tap on Security
  3. Tap on SIM card lock
  4. Choose a SIM card (Dual SIM)
  5. Enable or disable Lock SIM card
  6. Enter the PIN and tap Save
Download instructions?
If you need the manual often or offline, you can download it here as a PDF document for free. Download

Oppo Instructions