AT&T hopes for single smartphone OS

05.12.2008

- AT&T devices running third-party applications, such as MapQuest Navigator;

- and devices and applications unrelated to AT&T that simply use its network, such as a TomTom personal navigation device.

The latter, which some critics call the "dumb pipe" model, is "a very viable business for us, and one we are not going to shy away from," Smith said.

(Nancy Gohring in Seattle contributed to this report.)