I was wondering if anyone else is having/has had a problem I am getting. I plug my 5S into my laptop (as it needs charging) and I get the pop up on the phone asking trust/dont trust the computer (neither choice makes any difference). But as its plugged in (even before this message appears) the touchscreen becomes really unresponsive/laggy making the phone unusable. As soon as I disconnect from the laptop its fine again. Any ideas?