NETWORK WORLD'S HOTTEST TECH ARGUMENTS:
The invitation to press and analysts shows three AT&T-branded with the distinctive Windows Phone user interface. Only one carries a visible manufacturer's name: Samsung. AT&T it will offer new three new phones, running the latest Windows Phone 7.5 firmware:
* Samsung Focus S, with a 4.3-inch Super AMOLED Plus screen, and a 1.4GHz processor.
* Samsung Focus Flash, with a 3.7-inch Super AMOLED screen, and 1.4GHz processor.
* HTC Titan, with a big 4.7-inch display, and a 1.5GHz processor.