i noticed that the Katana 1 says Qualcomm 3g on the battery cover. sooooooo if the Katana DLX has EV-DO r.0 is that necessarily 3g, or are the two not even related? and whats the difference in its upload and download speeds???? i need a phone that my kiosk sells, and i don't want a razr or upstage. this seems like the only suitable option.