A hinge assembly for a mobile communications device, the hinge assembly comprising: a first frame member having two spaced-apart portions with a first pair of opposing cam slots defining a first cam path; a second frame member having two spaced-apart portions with a second pair of opposing cam slots defining a second cam path; a first cam pin in the first pair of opposing cam slots, the first cam pin being configured to move along the first cam path; a second cam pin in the second pair of opposing cam slots, the second cam pin being configured to move along the second cam path; a third pin extending between the two spaced-apart portions of the first frame member; a fourth pin extending between the two spaced-apart portions of the second frame member; and at least first and second links (170, 180), the first link having a first end rotatably connected to the first cam pin and an opposite second end rotatably connected to the fourth pin, and the second link having a first end rotatably connected to the second cam pin and an opposite second end rotatably connected to the third pin; wherein the first and second frame members (110, 120) are configured to move between a closed position and an open position as the first and second cam pins (130, 140) move in the respective first and second cam paths (116, 126) when the first and second frame members (110, 120) are rotated between the closed position and the open position; characterized in that the hinge assembly further comprises a stopper that defines a partially opened position of the first and second frame members (110, 120) between the closed position and the open position, wherein the stopper is movable between an active position, in which the stopper is configured to abut one or more of the at least first and second links (170, 180) to prevent movement of the first and second frame members (110, 120) from the partially opened position to the open position, and an inactive position, in which the stopper is configured to allow movement of the one or more of the at least first and second links (170, 180) between the closed position, the partially opened position and the open position. a first frame member having two spaced-apart portions with a first pair of opposing cam slots defining a first cam path; a second frame member having two spaced-apart portions with a second pair of opposing cam slots defining a second cam path; a first cam pin in the first pair of opposing cam slots, the first cam pin being configured to move along the first cam path; a second cam pin in the second pair of opposing cam slots, the second cam pin being configured to move along the second cam path; a third pin extending between the two spaced-apart portions of the first frame member; a fourth pin extending between the two spaced-apart portions of the second frame member; and at least first and second links (170, 180), the first link having a first end rotatably connected to the first cam pin and an opposite second end rotatably connected to the fourth pin, and the second link having a first end rotatably connected to the second cam pin and an opposite second end rotatably connected to the third pin; wherein the first and second frame members (110, 120) are configured to move between a closed position and an open position as the first and second cam pins (130, 140) move in the respective first and second cam paths (116, 126) when the first and second frame members (110, 120) are rotated between the closed position and the open position; characterized in that the hinge assembly further comprises a stopper that defines a partially opened position of the first and second frame members (110, 120) between the closed position and the open position, wherein the stopper is movable between an active position, in which the stopper is configured to abut one or more of the at least first and second links (170, 180) to prevent movement of the first and second frame members (110, 120) from the partially opened position to the open position, and an inactive position, in which the stopper is configured to allow movement of the one or more of the at least first and second links (170, 180) between the closed position, the partially opened position and the open position.