A mobile terminal comprising: a first frame; a second frame movably coupled to the first frame and configured to move in a first direction relative to the first frame to transition from a first state to a second state, or in a second direction relative to the first frame to transition from the first state to the second state, wherein the second direction is opposite to the first direction; a third frame movably coupled to the second frame and configured to move in the first direction or the second direction relative to the second frame; a flexible display comprising: a first region disposed on a front side of the mobile terminal and coupled to the first frame; a second region disposed on a rear side of the mobile terminal and coupled to the third frame; and a third region extending between the first region and the second region, wherein the third region is disposed on the front side or the rear side of the mobile terminal selectively according to a moving direction of the second frame based on being rolled around the second frame; and a driver configured to move the second frame in the first direction relative to the first frame and to move the third frame in the first direction relative to the second frame to transition from the first state to the second state, wherein the driver is further configured to be operable manually, wherein the driver comprises: a locker configured to lock the second frame having moved in the first direction, the locker comprises: a first slot formed in the second frame and inclined at a first particular angle with respect to the first direction, a second slot formed in the first frame and inclined at a second particular angle with respect to the first direction, wherein an inclined direction of the second slot is opposite from an inclined direction of the first slot, a latch movably installed in the second slot; and a third slot formed in the first frame to be connected to the second slot and to guide the latch to move in the first frame in the first direction or the second direction, wherein the latch is configured to engage with a wall of the inclined second slot when the second frame is in the second state. a first frame; a second frame movably coupled to the first frame and configured to move in a first direction relative to the first frame to transition from a first state to a second state, or in a second direction relative to the first frame to transition from the first state to the second state, wherein the second direction is opposite to the first direction; a third frame movably coupled to the second frame and configured to move in the first direction or the second direction relative to the second frame; a flexible display comprising: a first region disposed on a front side of the mobile terminal and coupled to the first frame; a second region disposed on a rear side of the mobile terminal and coupled to the third frame; and a third region extending between the first region and the second region, wherein the third region is disposed on the front side or the rear side of the mobile terminal selectively according to a moving direction of the second frame based on being rolled around the second frame; and a first region disposed on a front side of the mobile terminal and coupled to the first frame; a second region disposed on a rear side of the mobile terminal and coupled to the third frame; and a third region extending between the first region and the second region, wherein the third region is disposed on the front side or the rear side of the mobile terminal selectively according to a moving direction of the second frame based on being rolled around the second frame; and a driver configured to move the second frame in the first direction relative to the first frame and to move the third frame in the first direction relative to the second frame to transition from the first state to the second state, wherein the driver is further configured to be operable manually, wherein the driver comprises: a locker configured to lock the second frame having moved in the first direction, the locker comprises: a first slot formed in the second frame and inclined at a first particular angle with respect to the first direction, a second slot formed in the first frame and inclined at a second particular angle with respect to the first direction, wherein an inclined direction of the second slot is opposite from an inclined direction of the first slot, a latch movably installed in the second slot; and a third slot formed in the first frame to be connected to the second slot and to guide the latch to move in the first frame in the first direction or the second direction, wherein the latch is configured to engage with a wall of the inclined second slot when the second frame is in the second state. a first slot formed in the second frame and inclined at a first particular angle with respect to the first direction, a second slot formed in the first frame and inclined at a second particular angle with respect to the first direction, wherein an inclined direction of the second slot is opposite from an inclined direction of the first slot, a latch movably installed in the second slot; and a third slot formed in the first frame to be connected to the second slot and to guide the latch to move in the first frame in the first direction or the second direction, wherein the latch is configured to engage with a wall of the inclined second slot when the second frame is in the second state.