A portable communication device comprising: - a body including a part attaching/detaching section; - a case slidably coupled to the body, to allow opening or closing the part attaching/detaching section as the case slides, wherein the case can be slid to open or close the entire part attaching/detaching section; - a sliding module installed between the body and the case to allow sliding the case from the body, the sliding module including a pair of guide rails installed at opposite ends of the body and a pair of slide grooves formed at opposite ends of the case, and the guide rails and the slide grooves being slidably coupled to one another; - a locking unit installed in the body and the case for catching or releasing the case; and - at least one stopper for restricting the sliding of the case installed in the body and the case, characterized in that the stopper includes: -- first and second stopper recesses (61; 62) formed in the case to restrict the sliding of the case at an initial position or a final position; and -- a stopper locker installed in the body to be attached to or detached from the first and second stopper recesses as the case slides, the stopper locker including: --- a coupler coupled to a coupling recess formed in the body and the coupler having a coupling hole coupled to a coupling boss formed in the coupling recess; --- a catcher formed at a position adjacent to the coupler to generate a deflection when the case slides, to be attached to or detached from the first and second stopper recesses (61; 62) and to be caught or released; --- a resilient member formed in the catcher to provide a resilient force so that the catcher is deformed; and --- a support member formed in the coupler to support deflection of the catcher, wherein an inclined guide surface (61a; 62a) is formed in the first and second stopper recesses (61; 62) to detachably guide the catcher of the stopper locker, and an inclined surface is formed in the catcher to face the inclined guide surface (61a; 62a) of the first and second stopper recesses (61; 62) and guide attachment and detachment of the inclined guide surface of the first and second stopper recesses (61; 62). - a body including a part attaching/detaching section; - a case slidably coupled to the body, to allow opening or closing the part attaching/detaching section as the case slides, wherein the case can be slid to open or close the entire part attaching/detaching section; - a sliding module installed between the body and the case to allow sliding the case from the body, the sliding module including a pair of guide rails installed at opposite ends of the body and a pair of slide grooves formed at opposite ends of the case, and the guide rails and the slide grooves being slidably coupled to one another; - a locking unit installed in the body and the case for catching or releasing the case; and - at least one stopper for restricting the sliding of the case installed in the body and the case, characterized in that the stopper includes: -- first and second stopper recesses (61; 62) formed in the case to restrict the sliding of the case at an initial position or a final position; and -- a stopper locker installed in the body to be attached to or detached from the first and second stopper recesses as the case slides, the stopper locker including: --- a coupler coupled to a coupling recess formed in the body and the coupler having a coupling hole coupled to a coupling boss formed in the coupling recess; --- a catcher formed at a position adjacent to the coupler to generate a deflection when the case slides, to be attached to or detached from the first and second stopper recesses (61; 62) and to be caught or released; --- a resilient member formed in the catcher to provide a resilient force so that the catcher is deformed; and --- a support member formed in the coupler to support deflection of the catcher, -- first and second stopper recesses (61; 62) formed in the case to restrict the sliding of the case at an initial position or a final position; and -- a stopper locker installed in the body to be attached to or detached from the first and second stopper recesses as the case slides, the stopper locker including: --- a coupler coupled to a coupling recess formed in the body and the coupler having a coupling hole coupled to a coupling boss formed in the coupling recess; --- a catcher formed at a position adjacent to the coupler to generate a deflection when the case slides, to be attached to or detached from the first and second stopper recesses (61; 62) and to be caught or released; --- a resilient member formed in the catcher to provide a resilient force so that the catcher is deformed; and --- a support member formed in the coupler to support deflection of the catcher, --- a coupler coupled to a coupling recess formed in the body and the coupler having a coupling hole coupled to a coupling boss formed in the coupling recess; --- a catcher formed at a position adjacent to the coupler to generate a deflection when the case slides, to be attached to or detached from the first and second stopper recesses (61; 62) and to be caught or released; --- a resilient member formed in the catcher to provide a resilient force so that the catcher is deformed; and --- a support member formed in the coupler to support deflection of the catcher,