AT&T today delved into messaging-focused feature phones with four new devices. The Pantech Matrix (pictured) is the spiritual descendant of the Duo and carries the same dual slider that switches either to a full QWERTY keyboard or a number pad. It also carries a similar 1.3-megapixel camera and supports 3G audio and video streaming plus the carrier's music store downloads. It comes in blue, green and red trim and is priced at $80 on a two-year plan or $280 while contract-free.

The Samsung Propel switches to a single slider but uses a wide form to still fit a QWERTY keyboard. It likewise offers a 1.3-megapixel camera and 3G services and will also sell for the same $80 contract price in blue, green, red and white, though month-to-month pricing isn't yet available. It ships in late October.

A third option, the Pantech Slate, attempts to replicate the look of a regular QWERTY smartphone and is claimed to be the thinnest of its kind with a keyboard. It carries a 1.3-megapixel camera and will be available at the same time as the Propel.

AT&T's final entry is the PCD-made Quickfire, which represents one of the carrier's first Sidekick-like phones and slides out the display, rather that the keyboard, for typing. It boasts 3G and the option to view messages in regular portrait mode, and will come with green, orange or silver borders when it ships in November for $100 on contract.