Abstract: A mobile phone (10) includes: a first housing (12) including a first operation section (22) made of a touchscreen; a second housing (14) to which the first housing (12) is slidably connected; a slid state detecting section (27) detecting a transition from a not-slid state in which the first housing (12) is not slid with respect to the second housing (14) to a slid state in which the first housing (12) is slid with respect to the second housing (14); an inputting state detecting section (29) detecting an inputting state in which an operation input is being made at the first operation section (22); a phone network communication section (50) communicating with another phone via a phone network; and a control section (30) invalidating the operation input from the first operation section (22), in a case where (i) the slid state detecting section (27) detects the transition from the not-slid state to the slid state and (ii) the inputting state detecting section (29) detects the inputting state, the transition and t