My GS4 is less than a month old and doing weird things like one way speaker phone (I can only hear myself talk, I can't hear person on other line). BestBuy geek told me to do factory reset. My question is, if I backup using Kies, do I still have to "backup data and wi-fi passwords and other settings to Google server" before I do factory data reset or is Kies adequate? I kind of don't like my passwords on a cloud somewhere. Thanks!