How to format a blackberry?

1. Turn off the phone;

2. Press and hold the power-on key, volume increase key and volume decrease key to enter the interface of robot and exclamation point. At this time, double-click the robot on the screen, and the mobile phone will display the menu;

3. Press the volume button to move to the "recovery mode" option, and press the power button to confirm;

4. After the mobile phone displays the triangle icon, press the Home button to enter the recovery mode;

5. In this mode, use the volume up key and volume down key to move up and down, and press the power-on key to confirm the selection;

6. Click "Restore Factory Data" and "Clear Cache" once each;

7. When finished, restart the phone after completing the formatting by executing the "Restart" option.