How to do Sony Ericsson st18i hard reset
- Press the Menu key
- Settings
- Scroll to and select Privacy
- Factory Data Reset
- Reset Phone
- Erase Everything
- Enter Pin Code if you use it.
2nd way by using button keys
- Power button.
- Volume Down + Power button
- Navigate using Volume keys and to confirm the Power button.
- Select Factory reset
- And confirm by pressing the Power button