When I grew up there was no such thing as AutoCAD. I can't even begin to imagine editing design documents on my phone. Coming this fall; AutoCAD will be available on the iPhone. Yes there is an App for that and it's free. Here is an example of a phone conversation with me at AU this year.
Hang on a minute, I just recieved a text, sorry about that, had to update a drawing for the client.
Detailed information about AutoCAD on a MAC and the iPhone App
Like I said, I will be reviewing drawings at AU.
Download the APP today at AutoCAD APP