Mobile phone makers Nokia Corp, who found themselves unable to challenge their smartphone rivals without a good handset, has unveiled its first 4G LTE Windows phone, at the 2012 Consumer Electronics Show (CES).

The Nokia Lumia 900 is a bigger version of the Lumia 800 and has all the required specifications to counter all the top-notch smartphones in today's market. While segment leaders are still Apple, Samsung, HTC and Motorola, Nokia seems to be slowly re-asserting itself in the world of mobile phones.

The Lumia 900 has a 4.3-inch display with an AMOLED capacitive touch-screen... the same one found on the Samsung Galaxy S2, the Motorola Droid Razr and the HTC Rezound. In addition, the Lumia 900 boasts of a larger screen than the iPhone 4S (3.5-inches).

Meanwhile, internal storage capacities are comparable, at 16GB, to those found in major Android-based smartphones, while the 512MB of RAM is the same amount in the iPhone 4S.

The handset comes with a 1.4GHz Scorpion single-core processor which could be deemed comparable to a dual-core Android device, both in terms of user experience and optimized battery life supported with a smoother User Interface (UI). The phone runs the very well-reviewed Microsoft Windows Phone 7.5 Mango OS which, although has yet to truly worry either the iOS or the Android, is making steady ground on those two. In fact, some reports suggest it may even have surpassed them, so far as functionality is concerned.

The Lumia 900 has an 8 megapixel camera with support for a dual-LED flash and 720p HD video capture capability. Interestingly, very few smartphones in the market today have both a dual-LED flash and 720p HD support; the iPhone 4S, for example, has only support for an LED flash. Additionally, the camera has a Carl Zeiss optics lens (a F2.2 aperture lens with a 28mm focal length). This makes for sharper and clearer photographs.

However, the Lumia 900's main highlight is its 4G LTE capability. The smartphone is expected to allow data downloads at speeds up to 50Mbps on AT&T's 4G LTE network. Moreover, consumers who cannot access the LTE network can tap in to the HSPA+ network with speeds, theoretically, up to 21Mbps.

Finally, there is a 1800mAh battery at the back of all these features, which can provide up to 7 hours of talk time and up to 300 hours of stand-by time.

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