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.
- Open the Settings
- Tap on Security
- Tap on SIM card lock
- Choose between SIM1 and SIM2
- Tap on Change SIM PIN
- Enter your current SIM PIN
- Enter new SIM PIN and tap on OK
- Enter again new SIM PIN and confirm with OK