Handheld electronic device and method and computer-readable medium for controlling the same

A non-transitory computer-readable medium containing a computer program product comprising handheld electronic device executable instructions for controlling a handheld electronic device to perform a function by using a sensor to detect a tilting angle of the handheld electronic device, the handheld electronic device executable instructions comprising:

• determining the tiling state of the handheld electronic device, wherein the tiling state is determined to be in the first tiling state only when the tiling angle of the handheld electronic device is within a first predetermined tiling angle range with respect to a reference point, the tilting state is determined to be in the second tiling state only when the tiling angle of the handheld electronic device is within a second predetermined tiling angle range with respect to the reference point, and the first predetermined tiling angle range and the second predetermined tiling angle range do not overlap with each other;
• and
• controlling the handheld electronic device to perform the function in response to a determination that the handheld electronic device is in the first state, thereafter changes to the second tiling state.