Archived:Nokia 6630 shuts down during SNAP mobile online game session (Known Issue)
The phone is shut down if there is IP traffic on the phone after the screen saver is shown. The screen saver will appear when there has been no change in the display and there has been no user input (from keypad) for a period of time. The appearing screen saver causes the Canvas.hideNotify method to be called on the current Displayable, which can be determined from a call to Display.getCurrent.
All classes implementing Canvas in the application must override Canvas.hideNotify and Canvas.showNotify.