To perform suitable power-saving processing depending on a use form.

A portable telephone terminal (portable electronic device) 1 includes: a display unit 2B; a touch sensor 2A for detecting operation on a first screen displayed on the display unit 2B; a display unit 3B; a touch sensor 3A for detecting operation on a second screen displayed on the display unit 3B; and a control unit 10 for performing power-saving processing for changing the state of at least one of the display unit 2B and the display unit 3B to a power-saving state on the basis of predetermined conditions. When operation on at least one screen of the first screen and the second screen is not detected for longer than a threshold period, the control unit 10 performs different power-saving processing depending on the type of a program providing the screen.