A portable communication device comprising: a housing including a first housing portion and a second housing portion and foldable with respect to a folding axis; a flexible display including a first display area accommodated in the first housing portion, a second display area accommodated in the second housing portion, and a folding area located between the first display area and the second display area; a hinge assembly coupled with the first housing portion and the second housing portion, the hinge assembly including: a first hinge plate disposed between the first housing portion and the flexible display and configured to support part of the first display area; a second hinge plate disposed between the second housing portion and the flexible display and configured to support part of the second display area; a hinge housing disposed between the first housing portion and the second housing portion such that the hinge housing is at least partially exposed to an outside of the portable communication device when the housing is folded and at least partially hidden by the first housing portion and the second housing portion when the housing is unfolded; and a hinge module to which each of the first housing portion and the second housing portion is pivotably connected, the hinge module disposed in a space formed by the first hinge plate, the second hinge plate and the hinge housing when the housing is unfolded; and characterised by a protection layer extended over the first hinge plate, the second hinge plate and the hinge module, the protection layer including a first area fixed at the first hinge plate and a second area slidable with respect to the second hinge plate according to the housing being folded. a housing including a first housing portion and a second housing portion and foldable with respect to a folding axis; a flexible display including a first display area accommodated in the first housing portion, a second display area accommodated in the second housing portion, and a folding area located between the first display area and the second display area; a hinge assembly coupled with the first housing portion and the second housing portion, the hinge assembly including: a first hinge plate disposed between the first housing portion and the flexible display and configured to support part of the first display area; a second hinge plate disposed between the second housing portion and the flexible display and configured to support part of the second display area; a hinge housing disposed between the first housing portion and the second housing portion such that the hinge housing is at least partially exposed to an outside of the portable communication device when the housing is folded and at least partially hidden by the first housing portion and the second housing portion when the housing is unfolded; and a hinge module to which each of the first housing portion and the second housing portion is pivotably connected, the hinge module disposed in a space formed by the first hinge plate, the second hinge plate and the hinge housing when the housing is unfolded; and characterised by a protection layer extended over the first hinge plate, the second hinge plate and the hinge module, the protection layer including a first area fixed at the first hinge plate and a second area slidable with respect to the second hinge plate according to the housing being folded. a first hinge plate disposed between the first housing portion and the flexible display and configured to support part of the first display area; a second hinge plate disposed between the second housing portion and the flexible display and configured to support part of the second display area; a hinge housing disposed between the first housing portion and the second housing portion such that the hinge housing is at least partially exposed to an outside of the portable communication device when the housing is folded and at least partially hidden by the first housing portion and the second housing portion when the housing is unfolded; and a hinge module to which each of the first housing portion and the second housing portion is pivotably connected, the hinge module disposed in a space formed by the first hinge plate, the second hinge plate and the hinge housing when the housing is unfolded; and characterised by a protection layer extended over the first hinge plate, the second hinge plate and the hinge module, the protection layer including a first area fixed at the first hinge plate and a second area slidable with respect to the second hinge plate according to the housing being folded.