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.
- Tap on Settings
- Tap on Security
- Tap on SIM card lock
- Choose a SIM card (Dual SIM)
- Tap on Change SIM PIN
- Enter the Current PIN and tap Save
- Enter the New PIN and tap Save
- Re-enter the New PIN and tap Save