This will show you how to enable wifi sync on iphone and ipad. Wifi sync will let you sync apps and movies and ebooks between your iphone or ipad and your computer, without having to plug your device in during the sync. Once you have enabled the wifi sync you will only ever need to plug into your cable to charge your device :)
In order for wifi sync to work, there are a few things you will need to do in itunes on your computer:
in the device itsself, goto
You do not need to plug the device into a power outlet to sync. Once you have enabled the wifi sync option then you can keep your iphone or ipad in sync with your computer without ever having to plug in again!
Sources: Apple Support