Patent ID: 8606339

Claim:
A mobile communication terminal having a thin operation case with an operation panel formed on one main surface thereof, a display case with a display panel formed on one main surface thereof, and a movable connector to connect said operation case and said display case, and being capable of making transition between a normal open state of expanding said both cases by directing said operation panel and said display panel to the same direction, and a reverse close state of folding said both cases with main surfaces faced to each other by directing said display panel outward, and comprising an on-hook key provided on said operation panel, a main guide key provided on said operation panel and having a function assignment displayed in said display panel, and a sub guide key provided on said display panel, wherein an on-hook function is assigned to said sub guide key during a telephone call in said reverse close state, and the same function with said main guide key is assigned to said sub guide key during a standby time in said reverse close state.