Iphone 4 16gig black Or swap? !

16gig in overall good if not very good condition has a couple marks around front top edges but nothing major and phone comes with no box just usb and official mains plug. Running latest ios and is also running latest installous jailbreak on o2, tesco, giffgaff etc may be unlocked to more not sure. Bargain at 240 or swap for why? Text or call 07892815157