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 10 (ColorOS 7.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Security
Step 3:  Tap on  SIM card lock
Step 4:  Choose between  SIM1  and  SIM2
Step 5:  Enable or Disable  Lock SIM card
Step 6:  Enter  SIM PIN  and confirm with  OK
  1. Open the Settings
  2. Tap on Security
  3. Tap on SIM card lock
  4. Choose between SIM1 and SIM2
  5. Enable or Disable Lock SIM card
  6. Enter SIM PIN and confirm with OK

Oppo Instructions
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