A display apparatus comprising: a display; a communicator configured to scan a Bluetooth Low Energy, BLE, advertising packet in a standby mode in which the display is powered off; a power supply; and a controller, the apparatus characterized in that the controller comprises a main processor arranged to operate in a pre-power on mode and a normal mode, and a sub processor arranged to operate in a standby mode, wherein the sub processor is configured to control the power supply to continuously provide power to the communicator in the standby mode and control the communicator to scan for a BLE advertising packet in the standby mode in which the display apparatus is powered off except for the communicator, wherein the sub processor is configured to, based on a first signal comprising the BLE advertising packet being received from a remote control device in the standby mode, wake up the main processor, wherein the main processor is configured to, when waking up, change the display apparatus from the standby mode into the pre-power on mode, control the power supply to provide power to the display apparatus except for the display to activate all parts of the display apparatus except for the display, and identify whether a second signal is received within a predetermined time through the communicator in the pre-power on mode, and wherein the main processor is configured to, based on the second signal comprising a BLE packet, which is a different type of packet from the BLE advertising packet and comprising control information for displaying content including a broadcasting channel or a video, being received within the predetermined time from the remote control device, changes the display apparatus from the pre-power on mode into the normal mode, controls the power supply to provide power to the display to activate the display, and controls the display to display the content in the normal mode, wherein the main processor is configured to, based on the second signal not being received within the predetermined time, change the display apparatus from the pre-power on mode into the standby mode, and controls the power supply to turn the display apparatus off except for the communicator, and the sub processor is configured to control the communicator to scan for the BLE advertising packet in the standby mode. a display; a communicator configured to scan a Bluetooth Low Energy, BLE, advertising packet in a standby mode in which the display is powered off; a power supply; and a controller, the apparatus characterized in that the controller comprises a main processor arranged to operate in a pre-power on mode and a normal mode, and a sub processor arranged to operate in a standby mode, wherein the sub processor is configured to control the power supply to continuously provide power to the communicator in the standby mode and control the communicator to scan for a BLE advertising packet in the standby mode in which the display apparatus is powered off except for the communicator, wherein the sub processor is configured to, based on a first signal comprising the BLE advertising packet being received from a remote control device in the standby mode, wake up the main processor, wherein the main processor is configured to, when waking up, change the display apparatus from the standby mode into the pre-power on mode, control the power supply to provide power to the display apparatus except for the display to activate all parts of the display apparatus except for the display, and identify whether a second signal is received within a predetermined time through the communicator in the pre-power on mode, and wherein the main processor is configured to, based on the second signal comprising a BLE packet, which is a different type of packet from the BLE advertising packet and comprising control information for displaying content including a broadcasting channel or a video, being received within the predetermined time from the remote control device, changes the display apparatus from the pre-power on mode into the normal mode, controls the power supply to provide power to the display to activate the display, and controls the display to display the content in the normal mode, wherein the main processor is configured to, based on the second signal not being received within the predetermined time, change the display apparatus from the pre-power on mode into the standby mode, and controls the power supply to turn the display apparatus off except for the communicator, and the sub processor is configured to control the communicator to scan for the BLE advertising packet in the standby mode.