10. The method of claim 9 , wherein the Qwerty keypad has the high frequency of occurrence of the incorrect input due to the adjacent key press and the incorrect input due to the key input order, wherein the combination keypad has the high frequency of occurrence of the incorrect input due to the continuous key press, the incorrect input due to the adjacent key press, the incorrect input due to the key omission, and the incorrect input due to the key input order, and wherein the pop-up keypad has the high frequency of occurrence of the incorrect input due to the adjacent key press and the incorrect input due to the key input order.
9. The method of claim 8 , wherein the keypad type comprises at least any one of a Qwerty keypad, a combination keypad, and a pop-up keypad.