Hi. I know this is not a new issue but I've literally tried every single little fix, no matter how ridiculous it was to try and fix this dumbass WIFI sync and nothing works... So I have an iPhone 4S (GSM). I syncs fine when plugged into USB. If I leave iTunes open and disconnect the phone, it will also sync through WIFI. If I quit iTunes and restart it however, gone. Simply gone! The device doesn't appear in iTunes but in the iPhone under settings I can force it to sync with my Mac. Problem is it doesn't see the Mac and just give me a spinner forever. Obviously all the proper requirements are checked, and I've tried restarting everything, resetting the networks settings on the iPhone and a bunch of process killing voodoo and no matter what it happens again. Here's more: my iPad is ALWAYS visible and connected. And it has this behavior on now three different networks, both WIFI and wired on the Mac. So I'm no engineer but I'd say I covered it all as far as "non-piece of crap system" possibilities. I'm about ready to quit iOS all together (for more than just this naturally), but a solution to this, if there is any, would be greatly appreciated. Thanks!