Disclosed are a flexible printed circuit board and a mobile terminal using the same. The mobile terminal includes a printed circuit board (PCB), and a flexible printed circuit board (FPCB) connected to the printed circuit board. The flexible printed circuit board includes a branch extending from one side of the flexible printed circuit board, at least one switch provided on the branch and acquiring a key input signal, and a connector provided on an end portion of the branch and coupled to the flexible printed circuit board.