A mobile terminal comprising: a terminal body; a front display unit disposed on a front surface and lateral display units (252a, 252b) disposed on lateral surfaces of the terminal body, wherein the front display unit comprises a left region, a central region and a right region; and a controller configured to: - in response to receiving a first preset touch input (520, 620, 680, 720, 1020, 1120, 1220) through the left region or the right region (510, 610, 611, 710, 811, 812, 911, 912, 1011, 1012, 1111, 1112, 1211, 1212, 1311, 1512, 1612, 1711, 1811) of the front display unit disposed on the front surface of the terminal body in a sleep mode, enable a predetermined second display region (252, 252a, 252b) on one of the lateral display units that is located closest to a position of the received first preset touch input and switch from the sleep mode to an active mode; - control the display unit to display a preset operation image (630, 730, 830, 1310) on the enabled second display region; and - in response to receiving a second preset touch input (540, 640, 695, 740, 1040, 1140, 1240) on the left region or the right region, execute an item (531, 633, 739, 1031) displayed on the enabled second display region and positioned on the same horizontal line as the second preset touch input, and display a window (550, 650, 750, 1050, 1181, 1183, 1185, 1270) corresponding to the item. a terminal body; a front display unit disposed on a front surface and lateral display units (252a, 252b) disposed on lateral surfaces of the terminal body, wherein the front display unit comprises a left region, a central region and a right region; and a controller configured to: - in response to receiving a first preset touch input (520, 620, 680, 720, 1020, 1120, 1220) through the left region or the right region (510, 610, 611, 710, 811, 812, 911, 912, 1011, 1012, 1111, 1112, 1211, 1212, 1311, 1512, 1612, 1711, 1811) of the front display unit disposed on the front surface of the terminal body in a sleep mode, enable a predetermined second display region (252, 252a, 252b) on one of the lateral display units that is located closest to a position of the received first preset touch input and switch from the sleep mode to an active mode; - control the display unit to display a preset operation image (630, 730, 830, 1310) on the enabled second display region; and - in response to receiving a second preset touch input (540, 640, 695, 740, 1040, 1140, 1240) on the left region or the right region, execute an item (531, 633, 739, 1031) displayed on the enabled second display region and positioned on the same horizontal line as the second preset touch input, and display a window (550, 650, 750, 1050, 1181, 1183, 1185, 1270) corresponding to the item. - in response to receiving a first preset touch input (520, 620, 680, 720, 1020, 1120, 1220) through the left region or the right region (510, 610, 611, 710, 811, 812, 911, 912, 1011, 1012, 1111, 1112, 1211, 1212, 1311, 1512, 1612, 1711, 1811) of the front display unit disposed on the front surface of the terminal body in a sleep mode, enable a predetermined second display region (252, 252a, 252b) on one of the lateral display units that is located closest to a position of the received first preset touch input and switch from the sleep mode to an active mode; - control the display unit to display a preset operation image (630, 730, 830, 1310) on the enabled second display region; and - in response to receiving a second preset touch input (540, 640, 695, 740, 1040, 1140, 1240) on the left region or the right region, execute an item (531, 633, 739, 1031) displayed on the enabled second display region and positioned on the same horizontal line as the second preset touch input, and display a window (550, 650, 750, 1050, 1181, 1183, 1185, 1270) corresponding to the item.