A mobile telecommunication handset capable of implementing multitasking and a method for implementing multitasking in a mobile telecommunication are provided that makes it possible to implement multitasking even if sufficient memory and resources are not available. The mobile telecommunication handset includes a keypad having multitasking-specific function keys, a memory storing a task to run in a multitasking mode and task information related to the multitasking mode, a control unit controlling functions to implement a current task based on the task information, and a display unit displaying on-screen information related to multitasking in a multi tasking mode.