POWER SAVING SYSTEM FOR A HANDHELD COMMUNICATION DEVICE HAVING A FULL ALPHABETIC KEYBOARD

摘要

Method and arrangement that provides a power-saving mode for a handheld electronic device having a full alphabetic keyboard. The power-saving mode is enabled through disabling a sensor that detects motion of a ball of the trackball navigation tool and disabling the display screen of the handheld electronic device. The power-saving mode may be exited before disablement of the sensor when the display screen is disabled first.