A mobile apparatus including: a wireless communication module that receives a signal transmitted via a base station; a display that displays character; an input module that inputs the character or operation data; a first operating mode in which electric power is supplied to the display; a second operating mode in which electric power is not supplied to the display; an information reception module that receives information received via the wireless communication module or power saving monitoring information; an input monitoring module that monitors an unoperated state; a display controller that switches the first operating mode to the second operating mode when the unoperated state is detected; and a power saving controller that reduces information reception frequency at the information reception module when the unoperated state is detected by the input monitoring module.