Nokia N-Gage QD

If they could just take a Gameboy AdvanceSP and put an antenna on it, Oh my god, I'd buy it no matter how much it cost. Its the perfect form factor, and a brilliant screen. Who could ask for more?

Just so you know, a private company has contacted both Nintendo to inquire what a cellphone attachment for the GBA would require and if it would be feasible. Nintendo has already added bluetooth and internet acces, but Cellular service for multiplayer may be on the way.