So why not make one? the ds has a mic in it, speakers, more then enough prepossessing power right? all it needs is a antenna and sim card slot, which again i would be could fit in a flash cart 1 or 2 (preferably 2 if ur using a NDS light) i know i would buy it, one less thing to keep in my pocket. Alternatively i thing a GPS card would also have some promise, gps antenna with a micro sd card for maps. (heck both cell and gps card would rock!) the only reason i can think why this might not fly is perhaps some sorta legal reasons? Any thoughts?