Handheld electronic device, executing application method, and digital data storage media

1. A handheld electronic device, comprising:

a body;

a stylus;

a slot, wherein the stylus is disposed at the body by way of being inserted into the slot;

a communication module for entering a communication mode;

a detection unit coupled to the communication module, wherein the detection unit detects whether the stylus is removed from the slot under the communication mode; and

a processing unit coupled to the detection unit, wherein when the stylus is determined as being removed from the slot under the communication mode, the processing unit activates an application and changes an operating mode of the handheld electronic device to a speakerphone mode.

2. The handheld electronic device according to claim 1 , further comprising:

a switch disposed at one side of the slot and electrically connected to the body;

wherein the stylus presses the switch when the stylus is inserted into the slot and releases the switch when the stylus is removed from the slot;

the processing unit activates the application when the detection unit detects that the switch is released.

3. The handheld electronic device according to claim 1 , wherein the detection unit repeatedly detects whether the stylus is removed from the slot under the communication mode. the communication mode.

4. The handheld electronic device according to claim 1 , wherein after the detection unit detects that the stylus is removed from the slot under the communication mode, the detection unit further detects whether the stylus is inserted into the slot: if the stylus is inserted into the slot, then the processing unit closes the application.

5. The handheld electronic device according to claim 1 , wherein the application is a notepad application.

6. The handheld electronic device according to claim 5 , wherein the data is saved with regard to the call.

7. An application executing method applied to a handheld electronic device, wherein the handheld electronic device comprises a body, a stylus and a slot, wherein the stylus is disposed at the body by the way of being inserted into the slot, the application executing method comprises:

a. entering a communication mode;

b. determining whether the stylus is removed from the slot; and

c. activating an application and changing an operating mode of the handheld electron device to a speakerphone mode if the stylus is determined as being removed from the slot.

8. The application executing method according to claim 7 , wherein in the step b is repeated if the stylus is removed from the slot.

9. The application executing method according to claim 7 , wherein after the step c, the method further comprises:

closing the application when the stylus is determined as being inserted into the slot.

10. The application executing method according to claim 7 , wherein the handheld electronic device comprises a touch screen, and the application is a notepad application, wherein the notepad application comprises an input interface, in the step c of the application executing method, the notepad application is activated and the input interface is shown on the touch screen for a user to input a data.

11. The application executing method according to claim 10 , wherein in the step d, the data is saved with regard to the call history of the call.

12. A non-transitory digital storage medium having a plurality of commands executable on a handheld electronic device, wherein the handheld electronic device comprises a body, a stylus and a slot, wherein the stylus is disposed at the body by way of being inserted into a slot, the commands executing a method comprising:

a. entering a communication mode;

b. determining whether the stylus is removed from the slot; and

c. activating an application and changing an operating mode of the handheld electronic device to a speakerphone mode if the stylus is determined as being removed from the slot.