Black Iphone 4S 16GB ?

hi here i have a iphone 4s which is on o2 but can be unlocked the phone has a slight fault with it though the touch dosent work i think it is because it fell the other day but everything else works on the phone i think it is a small fault but i cant fix it as i have got no time as i have brought a samsung galaxy S3 i put it on for a cheap price for a quick sale no timewasters please ring me on 07979001844