Mobile terminal

1. A mobile terminal comprising:

a display;

a camera;

a wireless communication unit configured to perform wireless communication with an external device and comprising a position information module configured to acquire a position of the mobile terminal; and

a controller configured to:

receive a signal from the external device via the wireless communication unit;

recognize a loss state of the mobile terminal based on recognized content of the received signal;

generate a control signal for switching an operation mode of the mobile terminal according to the recognized loss state;

set the operation mode of the mobile terminal to a loss state mode for restricting use of the mobile terminal according to the generated control signal;

cause the display to display a power off screen indicating that the mobile terminal is being turned off according to a command to turn off the mobile terminal while the mobile terminal is in the loss state mode;

change a power mode of the mobile terminal to a power saving mode after displaying the power off screen;

according to the command and after displaying the power off screen, capture an image of a finder of the mobile terminal while the mobile terminal is in the loss state mode;

transmit the captured image of the finder and position information of the mobile terminal to the external device;

receive, from the external device, a remote control command for enabling the external device to remotely control operation of the mobile terminal, wherein the remote control command comprises a request for incoming messages received from another terminal;

authenticate identification information of the external device included in the remote control command based on pre-registered identification information;

when authentication is successful and in response to the remote control command, extract question messages which include questions from the incoming messages received from the another terminal and transmit the extracted question messages to the external device while the mobile terminal is in the loss state mode;

receive one or more response messages from the external device responding to the extracted question messages; and

transmit the one or more response messages to the another terminal.

2. The mobile terminal according to claim 1 , wherein the received signal comprises a text message and the recognized content corresponds to text indicating the loss state.

3. The mobile terminal according to claim 1 , wherein the received signal comprises voice information and the recognized content corresponds to recognized speech information indicating the loss state.

4. The mobile terminal according to claim 3 , wherein the controller is further configured to recognize a voice of the voice information based on pre-stored voice data and the recognized content further comprises recognizing the voice of the voice information.

5. The mobile terminal according to claim 1 , wherein the loss state mode corresponds to setting the mobile terminal to a locked state, restricting data communication of the mobile terminal, or setting the mobile terminal to a power saving mode.

6. The mobile terminal according to claim 1 , wherein the controller is further configured to transmit time information to the external device corresponding to when the loss state is determined.

7. The mobile terminal according to claim 6 , wherein the controller is further configured to transmit the time information to the external device associated with a person that is most frequently in communication with the mobile terminal.

8. The mobile terminal according to claim 1 , wherein the controller is further configured to forward an incoming call to the external device while the mobile terminal is in the loss state mode.

9. The mobile terminal according to claim 8 , wherein:

the received signal comprises a message and the loss state is determined based on an indication in the message indicating the loss state; and

the external device is designated by the message which comprises contact information of the external device.

10. A mobile terminal comprising:

a display;

a camera;

a wireless communication unit configured to perform wireless communication with an external device and comprising a position information module configured to acquire a position of the mobile terminal; and

a controller configured to:

collect context information of the mobile terminal,

recognize a loss state of the mobile terminal based on the collected context information; and

set the operation mode of the mobile terminal to a loss state mode for restricting use of the mobile terminal according to the collected context information;

cause the display to display a power off screen indicating that the mobile terminal is being turned off according to a command to turn off the mobile terminal while the mobile terminal is in the loss state mode;

change a power mode of the mobile terminal to a power saving mode after displaying the power off screen;

according to the command and after displaying the power off screen, capture an image of a finder of the mobile terminal while the mobile terminal is in the loss state mode;

transmit the captured image of the finder and position information of the mobile terminal to the external device;

receive, from the external device, a remote control command for enabling the external device to remotely control operation of the mobile terminal, wherein the remote control command comprises a request for incoming messages received from another terminal;

authenticate identification information of the external device included in the remote control command based on pre-registered identification information;

when authentication is successful and in response to the remote control command, extract question messages which include questions from the incoming messages received from the another terminal and transmit the extracted question messages to the external device while the mobile terminal is in the loss state mode;

receive one or more response messages from the external device responding to the extracted question messages; and

transmit the one or more response messages to the another terminal.

11. The mobile terminal according to claim 10 , wherein the context information comprises a location pattern of the mobile terminal in combination with user information of the mobile terminal.

12. The mobile terminal according to claim 11 , wherein the controller is further configured to determine the loss state of the mobile terminal when the location pattern of the mobile terminal does not match a pre-stored location pattern and the user information comprising an image of a user's face and voice input of the user is not received for a predetermined time period.

13. The mobile terminal according to claim 12 , wherein the controller is further configured to cause the display to turn off when the loss state mode is determined and set the mobile terminal to a power saving mode.

14. The mobile terminal according to claim 10 , wherein the controller is further configured to forward an incoming call to another designated terminal while the mobile terminal is in the loss state mode.

15. The mobile terminal according to claim 14 , wherein:

the collected context information comprises a received message and the loss state is determined based on an indication in the received message indicating the loss state; and

the another designated terminal is designated by the received message which comprises contact information of the another designated terminal.