Sometime in the last couple of weeks, my iTunes has decided my 4S doesn't exist. I plug the phone into my computer but it never shows up under devices in iTunes. I've tried reinstalling iTunes, updating my phone, restoring my phone to factory resets (first restoring from backup and then restoring as new iPhone. Nothing works. My computer is still not recognizing the device. I don't even get the Windows pop up to download pictures when I plug it in. The phone still starts charging when I plug it in but nothingelse happens. I have been looking around the internet quite a bit and although I am not the only person having this issue, there doesn't seem to be a solution for it that I can find. Any ideas?