Disclosed is a mobile device, a control method thereof, a message sending apparatus and a message sending method. The mobile device includes a wireless communication unit which performs wireless communication via a wireless network; a signal processing unit which processes a signal transmitted/received by the wireless communication unit; a display unit which displays an image based on the signal processed by the signal processing unit; and a control unit which receives a message from a counterpart device, displays the received message on the display unit, remotely accesses a remote device, and controls the remote device to allow the mobile device to access information stored in the remote device.