it is just all round bad. the slidy bit jammed like on my w850i. there are 2 screws that keep the slider on the rails and eventually they fall out., the slider jams and carphone warehouse codnt fix it and nor could sony. sony E's seem to have a habbit of attracting moisture which gets inside the working, mine and my dads recently had this and my sis's not long ago. this is also irrepareable. the w910i:
speakers 4/10
screen: 8/10 - same as any other sony really, my mate said there wasnt anything bad about it or great. just normal.
camera: i have not a clue, but its 2 mega pixes, which is the same as my w850i and that is AT LEAST 2 years old now, so i think they could have made it up to 3MP.