My wife had been having some issues with her 8. We are thinking it's her backup st this point because similar issues were exhibited on the 7 (though that had it worse). We are talking freezes, crashes, and severe lag. I define severe lag as the phone taking 15-30 seconds to respond to touch input at times. It's limited to maybe once or twice every other day, but still annoying. So anyway, she wants to start for scratch. But she has dozens of work contacts she doesn't want to lose. Is there a good way for her to make a backup of just the contacts, start a fresh install/setup of iOS and then restore contacts only?