It's raining smartphones at the 2012 Consumer Electronics Show (CES) in Las Vegas. The top 5 smartphones revealed so far are Samsung's Galaxy Note, Sony's Xperia S, Motorola's Droid Razr Maxx, Nokia's Lumia 900 and the HTC Titan II.

Check out, in brief, the features of the phones...

HTC Titan II

The Titan II will run on AT&T's networks and offers a hugely impressive 16 megapixel camera... easily the biggest and first in its class.

The phone will run on the Microsoft Windows Phone 7.5 Mango OS and, like the Nokia Lumia, will be the first phone from the brand to support LTE connectivity. The smartphone also allows 720p HD video recording with the rear camera, as well as video calling over Wi-Fi with its 1.3-megapixel front-facing camera. The Titan II includes features like geo-tagging, BSI sensor, image stabilization, face detection, Accelerometer, gyro, proximity and a compass.

Samsung Galaxy Note

Samsung unveiled the Galaxy Note on Monday and announced its launch in the U.S. on AT&T's network.

The Galaxy Note was one of the most talked-about devices at CES; the combination of a tablet and a smartphone were too much for most people to resist. The device comes with a 5.3-inch WXGA Super AMOLED HD screen that comes with 1280×800 resolutions at 285 ppi density. The screen provides a bright, rich, colorful viewing experience, according to the company.

The inclusion of the S Pen, a fast and responsive stylus, an input tool that allows users to create fine lines and details on the device's display, much like an ink pen and a pad of paper, will be an added attraction to smartphone users.

The Galaxy Note comes with 16GB of internal memory which can be expanded up to 32GB, via a microSD card. The device is powered by a 1.5GHz dual-core processor, has a 2 megapixel front-facing camera and an 8 megapixel rear-facing camera. Unlike the European model, the AT&T model will feature Near Field Communication technology (NFC).

Sony Xperia S

Sony introduced 5 smartphones - the Xperia S, the Xperia ion, the Xperia NX and the Xperia acro HD. However, it was the Xperia S that grabbed the attention of smartphone lovers.

The phone runs a dual-core 1.5GHz Qualcomm MSM8260 Snapdragon processor, with 1GB of RAM and a 4.3 inch screen 720x1280 pixel LED-backlit LCD display with capacitive multi touch-screen of 342 ppi density. It also has a front-facing 1.3 megapixel camera for video calling and an impressive 12 megapixel camera at the back.

The phone offers two memory configurations - 16/32GB. The Sony Xperia S will run on the Android 2.3 Gingerbread and will receive an update for the latest Android 4.0 Ice Cream Sandwich during the second quarter of 2012. It comes with the Mobile BRAVIA Engine and Timescape User Interface. It also boasts features like PlayStation certification, Near Field Communication technology (NFC), an accelerometer, gyro, proximity, compass, Active Noise Cancellation with a dedicated mic, an MP4/H.263/H.264/WMV player, an MP3/eAAC+/WMA/WAV player and TrackID music recognition.

Motorola Droid Razr Maxx

The Motorola Droid Razr Maxx has been released for Verizon Wireless. The new Moto Droid sports a 4.3-inch 540x960 pixels Super AMOLED Advanced capacitive touch screen with 256 ppi pixel density.

The best feature of the new Motorola phone, according to Verizon, is its revolutionary Li-Ion 3300 mAh that promises to provide a whopping 21 hours of talk time and 368 hours of standby time.

The Razr Maxx measures 130.7 x 68.9 x 9 mm, weighs 145 g and has a dual-core 1.2 GHz Cortex-A9 processor with a chipset of TI OMAP 4430, PowerVR SGX540 GPU.

The phone sports an 8 megapixel, 3264x2448 pixels unit autofocus, LED flash rear camera with 1080p video capture capabilities. The phone also has a 1.3 megapixel front-facing camera for video chatting. The cameras have features like auto focus, Touch-focus, geo-tagging, face detection and image stabilization.

Nokia Lumia 900

On Monday Nokia's flagship Windows phone - the Lumia 900 handset - was unveiled at the CES. The phone is the company's first 4G LTE phone and has been described as "iconic, beautiful and fast" by Chris Weber, the President of Nokia in North America. The Lumia 900 will run on the AT&T network.

The Nokia Lumia 900 is the upgraded version of Lumia 710 and sports a 4.3-inch 800 x 480 pixels Super AMOLED Plus capacitive ClearBlack touch-screen with 217 ppi density.

The phone comes with a 1.4 GHz Scorpion processor, Qualcomm APQ8055 Snapdragon, Adreno 205 GPU with 16GB internal storage and 512MB RAM and will run on the latest Microsoft Windows Phone 7.5 Mango. The new 7.5 Mango will offer one-touch access to social networking sites, along with features like easy grouping of contacts, communication threads and Internet Explorer 9.

The Lumia 900 sports a rear-facing 8 megapixel, 3264x2448 pixels unit dual LED flash camera with 720p video capture capabilities and a secondary 1.3 megapixel camera for video calling. Nokia has used Carl Zeiss optics for the new Lumia 900.