How to save power when talking on cellular phone

摘要

The present invention relates to a method for reducing power consumption during a call in a cellular phone, and it turns off an unnecessary power supply during a call such as a liquid crystal display device or a keypad light source when the user talks, thereby extending the battery use time of the telephone. The present invention also provides a method of controlling a mobile communication terminal, including: a call mode detecting process for detecting a call mode according to a user's intention; a power off process for disconnecting unnecessary power from the display unit and the keypad when the mobile terminal enters a call mode, And a waiting state restoration process of restoring the state to a waiting state when the call is terminated after the power is shut down.