The smartphone that promises to be your computer in your pocket, the Atrix 4G is now available at Amazon.  For just $149 you get an NVIDIA Tegra 2 dual-core processor with each core running at 1GHz, a 4-inch display with a resolution of 960×540 and the ability to multi-task to your hearts content.  The Atrix 4G comes equipped with Android 2.2 Froyo, includes a 5 megapixel camera with 720p video recording capability, wireless-N for Wifi, bluetooth, GPS, HDMI audio/video output, 16GB of internal storage with the ability to expand via microSD to 32GB.   What the subsidized 2-year contract price of $149 does not get you is the extra laptop dock, or multimedia dock.  Motorola claims a decent 9 hours of talk time and supports AT&T’s dual-band 850/1900 MHz 4G network (UMTS/HSDPA/HSPA+).

Along with the cost of the phone you will need to pick up a data plan if you don’t have one already, but you knew that already.  Be sure to check around for bundles that include the laptop dock or multimedia dock along with the Atrix.