I don't think it's completely out of the realm of possibility that Apple might eventually expand it's product line to include a larger iPhone. Apple offers 2 screen sizes in every other product they make. I think we could see Apple offer a 4" and 5" screen. But I agree that beyond that the market is probably marginal enough for Apple not to be worried about it- OR as suggested above, simply add phone functionality to iPads in conjunction with a wireless headset.
1/4/13 at 8:08am