I have a 3G 64gig on ATT unlimited plan... 2 days ago I was on 3g trying to download Prince of Persia from the Itunes store and I get a message saying that I cannot download a file larger than 20mg.... WTF???!!!! What's the point of unlimited data if I have a limit to my download size. This was the whole point of paying extra in the first place, so I can download apps on the go. FRUSTRATING!!!!