Abstract: An electronic device includes at least a pair of opposite touch keys defined on a touch panel, a touch sensing unit, a storage unit, a touch control unit, and a CPU. The storage unit stores a key-coordinate area relation list, which defines a relationship between the keys and the coordinate areas. A touch sensing unit included in the touch control unit generates signals in response to user touches on the keys. A touch area determining module included determines the coordinates touched according to the signals, and searching the key-coordinate area relation list to determine the coordinate areas including touched coordinates, and determines whether the touched coordinates distributed in both of the coordinate areas corresponding to the one pair of the pair of opposite touch keys. Then the key determining module determines an “OK” key is touched if yes. The CPU executes a function corresponding. A related method is also provided.