The Google Nexus 4G AT&T is set to shake up the smartphone market once it hits the market around Thanksgiving. The Samsung Galaxy S2, which scored 3 million sales outside the U.S. in just 55 days, may right now be considered the prime contender to Apple's throne -- but that may change as soon as Google introduces its newest smartphone.

The smartphones running on Android have been flowing into the market seeking customer attraction. But only a few of them have lived up to expectations with enhanced camera and processors. One such smartphone that has made a deep impact on the market is HTC sensation. The Taiwan-based smartphone maker is definitely in the contention to compete with the others in the market.

Here is a comparison between HTC Sensation and Google Nexus 4G AT&T:

Operating System: HTC Sensation will run on Android 2.3 or Gingerbread juice and will have its own customized UI in the form of TouchWhiz. Google’s Nexus 4G AT&T, however, will be the first smartphone on the planet to run on Android 4.0, that is, Ice Cream Sandwich which is expected to integrate all the qualities of the previous Android versions.

Camera: HTC Sensation has an 8MP rear and a VGA front-facing camera with 1080p video capture capability, while the Nexus will come with a 5MP rear and 1MP front-facing camera with an enhanced S3D video capability for supporting 3D display and 3D recording. Like most of the smartphones in its category, the Google-made smartphone will flash a 1080p HD video recording and playback which will provide sensor support and optimum output even during a low-light situation.

Dimensions: HTC Sensation has been built with an aluminum frame. The smartphone reviews says that the HTC-made device feels smaller in comparison to the other smartphones in the market. The Nexus is expected to work on its previous 4-inch display with a super AMOLED capacitive touchscreen with 480 x 800 pixels.

Processor: the HTC Sensation sports a 1.2GHz dual-core QUALCOMM chip which makes the smartphone even faster than the others in the market right now. That, however, may change when Google Nexus 4G AT&T enters the arena as the smartphone is expected to be powered by a dual-core Snapdragon processor that will have Krait chips from Qualcomm, along with a 1GB RAM. It is yet to be decided if the processor will be of either 1.2GHz or 1.5GHz. In short, the krait based Snapdragon processor will have the ability to run at a lightning speed of 2.5 GHz per core at the least power which will make it more than a hundred times faster than a normal ARM based CPU. An enhanced LTE modem is also expected to be integrated with the smartphone’s chipsets.

Memory: The previous Google Nexus S had 16GB storage with 512 MB RAM that is expected to be enhanced when the newest smartphone hits the market. The HTC Sensation at the moment sports a 768 MB RAM and 1GB internal memory with support for microSD up to 32GB.