Samsung Galaxy S2 Skyrocket HD, which was unveiled at the Consumer Electronic Show 2012 and is expected to be launched within a few months, is a 9.27-millimeter sliver of a smartphone with an HD Super AMOLED screen (1280x720).

The HD iteration of Samsung's Galaxy S2 Skyrocket, however, will have to face fierce competition from Nokia's third Lumia smartphone - Lumia 900, which is expected to be launched during the same time.

The Nokia Lumia 900, launched at the 2012 Consumer Electronics Show (CES) on Monday, is the first of Nokia's Windows Phone-based range to feature high-speed LTE connectivity. The phone has already received rave reviews about its head-turning design, bigger screen and a better battery than the Lumia 800. This time Nokia has packed a front-facing camera too (a feature missing in the previous model).

Let's check out the features of Lumia 900 as compared to the Skyrocket HD to see which smartphone has the potential to create more fan-following.

Display: The Nokia Lumia 900 will sport a 4.3-inch 800 x 480 pixels Super AMOLED Plus capacitive ClearBlack touch-screen with 217 ppi density, compared to the Samsung Galaxy S2 Skyrocket HD, which will have a 4.65-inch screen sporting an HD 1280 x 720 pixels Super AMOLED Plus capacitive touch-screen with 316 ppi pixel density and TouchWiz user interface. Both the smartphones have used the same Corning Gorilla Glass for screen protection.

Size: The Nokia Lumia 900 will have dimensions of 127.8 x 68.5 x 11.5 mm and will weigh 160g, while the size of the Skyrocket HD is still unknown. But its predecessor has dimensions of 129.8 x 68.8 x 9.5 mm and weighs 130.5 grams and according to various rumors, the HD version will be 9.3 mm thinner than the predecessor. Samsung, however, has not disclosed information about the size of the Skyrocket HD phone.

Processor and Memory: The Lumia 900 will come with a 1.4GHz Scorpion processor, an Adreno 205 GPU and will feature 16GB of internal storage and 512MB of RAM. The Lumia 900 comes with the latest Qualcomm APQ8055 Snapdragon chipset. Nokia has not provided the microSD card slot again with its new Lumia phone. Skyrocket HD, on the other hand, is expected to come with a 1.5 GHz dual-core processor. The Samsung Galaxy S2 phone will feature 16GB storage, 1 GB RAM and the memory of the phone can be expanded up to 32 GB via micro SD card slot.

Operating System: The Lumia will run on the latest Microsoft Windows Phone 7.5 Mango Operating Systems and offer one-touch access to social networking sites, along with features like easy grouping of contacts, communication threads and Internet Explorer 9. Samsung's latest phone will have Android OS, version 2.3.5 Gingerbread. But Samsung smartphone users can expect an update to Android 4.0 Ice Cream Sandwich later this year.

Camera: Nokia Lumia 900 will sport a rear-facing 8 megapixel 3264x2448 pixels unit autofocus and dual-LED flash camera. Unlike the Lumia 800, which does not have a secondary camera for video calling, the new Lumia will have a 1.3 megapixel front-facing camera for video calling. Nokia has used Carl Zeiss optics for its Lumia cameras.

Samsung Galaxy S2 Skyrocket HD too will have an 8 MP, 3264x2448 pixels, autofocus, LED flash camera. But the 1080p video capture capabilities are more in the Samsung phone as compared to the 720p video capture capabilities of Nokia Lumia 900. Samsung has integrated a more powerful secondary camera of 2 MP for video calling than Nokia.

3G/4G: The Nokia Lumia 900 3G will come with HSPA+ support that will translate into download speeds of 21 Mbps and upload speeds of 5.76 Mbps. Unlike the Lumia 800, the newer phone will support 4G LTE connectivity for AT&T. The 4G network will allow speeds of up to 50Mbps for downlink and 25Mbps for uplink. The Samsung Skyrocket HD will have the same download speed of 21 Mbps and upload speed of 5.76 Mbps like Lumia 900 and will support 4G LTE connectivity for AT&T.

WLAN/Bluetooth/USB: The Lumia 900 will have Wi-Fi 802.11 b/g/n, NFC, Bluetooth 2.1 version with A2DP and EDR and microUSB version 2.0 while the Skyrocket HD will have Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot, Bluetooth version 3.0 with A2DP, EDR and microUSB version 2.0.

Battery: The Lumia 900 will have an improved and longer-lasting standard Li-Ion 1830 mAh (BP-6EW) battery, compared to the Li-Ion 1450 mAh battery of the Lumia 800. But Samsung is yet to reveal the battery information of Skyrocket HD.

Other Features: Lumia 900 will boast features like HTML5, Adobe Flash, A-GPS support, an Accelerometer, gyro, proximity and a compass, as well as active noise cancellation with a dedicated mic, MP3/WAV/eAAC+/WMA player, MP4/H.264/H.263/WMV player, Xbox Live Hub, voice navigation and a document viewer/editor, predictive text input, video/photo editor, voice memo/command/dial.

Galaxy S2 Skyrocket HD will also have a range of features like NFS, active noise cancellation with dedicated mic, SNS integration, MP4/DivX/XviD/WMV/H.264/H.263 player, MP3/WAV/eAAC+/AC3/FLAC player, Organizer, image/video editor, document editor, Google Search, Maps, Gmail, YouTube, Calendar, Google Talk, Picasa integration, voice memo/dial/commands and predictive text input (Swype) to offer to its users.

The Galaxy S2 Skyrocket is sold at $200 with a new two-year contract by the AT&T and The HD version is expected to debut at $250 or more. It is rumored that the Nokia Lumia 900 can come at an amazingly cheap price of $99 from AT&T under a two-year contract.