Thoroughly confused here. What do you mean 'one touch system'?
When I press the phone icon instead of the keypad the screen shows several blocks with initials in which represent people I have phoned previously. The keypad is a very small icon at the bottom of the screen and it is easy to miss this a press one of the blocks which means I ring someone I didn't mean to.
I just want to disable this if possible.
I see. So you want to changing it so you aren't tapping the wrong thing. You can make the icon you wish to use moved to another position on the screen so that it is easier to hit all by itself and not mix it up with other icons.