I'm am trying to share some purchased apps from my imac to my new iphone. The tutorial says to click on the home sharing option in itunes, and I don't have one. I have checked that I have all my updates. So what do I do now?
iTunes menu Advanced > Home Sharing.
But that won't get the apps on the iPhone. It allows you to view the Music and Videos you have stored on the computer, on the iPhone.
Either connect the iPhone to iTunes and sync it or on the iPhone, open the Apps app, then More... then Purchased to redownload the apps.
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