Nintendo is becoming behind the times... they should just give in to the fact that iOS and android mobile devices are far more popular and more than capable of being gaming machines, perhaps they may not be 3D but really,,,,,, nintendo should stop trying to produce mobile gaming machines, spending millions of $$ on R&D for hardware and instead just concentrate on a software platform for the iOS and android market that would allow their games to be played and maybe offer a hardware gamepad that works with the device to make it unique.
I have an iphone, im not about to buy a 3DS to carry around as well, once you count in the wallet, keys and change, I don't really have any more pockets to make it easy --- and that is the heart of it, something that you will just want to carry with you, and not a burden,,