Recently, after installing Wifi Sync, iphone4 does not connect (sync) to iTunes or PC via the USB port. Does anyone has similar problem or solution to fix it?

I think the problem is with the phone and not Windows or iTunes sw. I have tried reinstalling iTunes, USB drivers, etc. Also, uninstalling the app does not resolve it. If anyone has knowledge of the OS, please advise. Thank you.

Wifi sync has been reported to cause similar problems. It us quite a hack and I don't know if it is actively updated to work with latest iOS and iTunes versions.

Best to uninstall it and wait for a more stable solution.