AT&T has announced two new Android smartphones HTC Vivid and Samsung Galaxy S II Skyrocket to run on It's 4G LTE Network.

In addition, AT&T LTE service will launch Nov. 6 in Boston, Washington, D.C., Baltimore, and Athens, Ga. The Nov. 6 launches expand AT&T’s 4G LTE network to 9 markets, including Atlanta, Chicago, Dallas-Fort Worth, Houston and San Antonio, and it plans to reach 15 markets and 70 million Americans by year-end 2011.

With these new deices AT&T now exceeds commitment to offer 20 4G devices in 2011, addition of LTE smartphones on Nov. 6 brings 4G total to 22.

HTC will be is available at price of $199.99 with a two-year commitment. It is powered by a dual core 1.2 GHz processor and has a 4.5-inch qHD display (540x960 pixels). Other features include

• Enhanced 8-megapixel camera with f2.2 28mm wide angle lens for low light photos
• 1080p HD video recording at 60 frames per second, slow motion playback and on-device trimmer to optimize social media uploads and memory space
• 16 GB of on-board memory, microSD expandable to an additional 32 GB

Samsung Galaxy S™ II Skyrocket is powered by a 1.5 GHz dual core processor and will be available at price of $249.99 with a two-year commitment. Features include

• 4.5-inch SuperAMOLED Plus display(800x480 pixels)
• Android Gingerbread (2.3.5)
• 8-megapixel rear-facing camera with LED flash, with 2-megapixel front-facing camera
• 1080p HD video recording
• 16 GB of on-board memory, microSD expandable to an additional 32 GB