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The PIN of the SIM card can be easily changed on the Oppo smartphone via the security settings.

Note: To change the PIN, the current PIN is required.

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: Tap on  Change SIM PIN
Step 6: Enter the  Current PIN  and tap  Save
Step 7: Enter the  New PIN  and tap  Save
Step 8: Re-enter the  New 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. Tap on Change SIM PIN
  6. Enter the Current PIN and tap Save
  7. Enter the New PIN and tap Save
  8. Re-enter the New PIN and tap Save
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Oppo Instructions
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