T-Mobile have now gone the official route with a couple of new Android smartphone for their network, and have officially announced the Samsung Exhibit 4G and the Samsung Gravity Smart handset, two mid-level devices that are expected to hit T-Mobile shelves sometime this month.

According to the guys over at Android Central, the Samsung Gravity Smart is an Android 2.2 Froyo handset featuring a slide out QWERTY keyboard, 3 megapixel camera with LED flash, 3.2-inch touch screen, Skype, and T-Mobile Group Text service.

The Samsung Exhibit 4G is an Android 2.3 Gingerbread handset with 1 GHz processor, 3 megapixel camera with flash, front facing camera, 21 Mbps 4G radio, and Samsung Media Hub with preinstalled Bejeweled 2, Scrabble and Doodle Jump.

Price wise the Samsung Exhibit 4G will cost $79.99 after a 50-buck mail in rebate on a 2-year agreement while the Samsung Gravity Smart costs $69.99 after a 50-buck rebate for the Sapphire Blue and Berry Red models and $29.99 for the Lunar Grey version again on a 2-year term.