so my granny's iphone is dropping calls left and right. at&t has reset her network but the problem still persists. can we bypass the whole "try a new sim card" and just get a whole new phone? im told that if its within the one year that she can get the phone replaced? second question is- what do i need to do to retain all the info on her current phone and transfer it over to the new one? the comptuer she used to set up the iphone initially is about 7000 miles away. i have my computer but will i be able to back up her phone on my computer and then restore the new phone that way? third question- regarding security. when you guys get your phone replaced do you wipe the phone clean before trading it in ? or do you leave all of your info on it? if you wipe it clean how do you do this exactly and would it be completely safe to do as long as you back up the phone before doing it? any chance of not being able to get the info back?