At the Home screen, tap Security.
At the Security screen, tap Menu.
Select Toolbox.
Enter the 4-digit master code.
At the Toolbox (1 of 3) screen, tap the → arrow.
At the Toolbox (2 of 3) screen, tap Clean Screen.
The screen will be frozen for 30 seconds to allow you to clean it.
Press the Back arrow twice to return to the Security screen.
