I have something strange happening with my iphone 4. I have connected it to my windows laptop to recharge and the laptop keeps telling me the device is not recognised (I've recharged without these messages for the past three months) The phone is slowly recharging but something is wrong, it has been on charge now for 8 hours and had 19% charge at the beginning of that time, I'm now at only 70%! If I go to Itunes I can't see my phone. Have tried connecting the phone by USB to my IMac and it does not do what it has always done and open ITunes automatically. If I open ITunes I cannot see my phone either. Battery charging is equally slow. Since I can't see my phone I can't synchronise, update or backup. Has anyone had this problem or does anyone have any suggestions what has gone wrong?