Actually, the function everything are the SAME!!! My fren have both, I played, found out is the SAME! just that the designs are different, and yea, I agree with you, the keypad for K810i, I dun like it either, but it is the latest design laaa.....But one thing bad for both model is the joystick, that is the worst problem I've seen in every joystick hp, mulfunction easily, think twice, my 20cents oni....