Ahead of the Cellular Telecommunications Industry Association (CTIA) wireless trade show, which was held in New Orleans in the first few days of this month from May 8 to May 12, AT&T announced the beautiful pure white Samsung Focus 2, adding it as the third handset to its 4G LTE capable windows phone line-up, including Nokia Lumia 900 and HTC Titan 2.

The South Korean giant recently confirmed the same report and has offered Samsung Focus 2 as a Windows 7.5-powered budget smartphone, available at $49.99 with a two-year contract on AT&T - a price that appears to challenge the Lumia 900 and HTC Titan 2. But with the price drop strategy will the new Windows phone be able to fight against heavyweights like Nokia Lumia 900 and HTC Titan 2?

Powered by Windows Mango, Lumia 900 is the second Lumia phone to release in the US after Lumia 710. AT&T confirmed last month that the phone will be available at a retail price of $99.99. At the same time, AT&T also informed that it will charge a full price of $449.99 for the 4G LTE capable Nokia Lumia 900. On the other hand, HTC Titan 2, equipped with a larger screen, was announced by the carrier, at a price costlier by $100 and available at a full retail price of $549.99.

Further, AT&T has also brought in the late weeks of April a high-gloss white-colored version of the Nokia Lumia 900 handset, which also added to the Finnish smartphone's sales.

So, now Windows fans have got three Mango offerings to drool upon from outperforming tech giants in the smartphone arena. You have to decide on which out of the three we will be your choice, if you are going for a phone upgrade. Will it be the Samsung Focus 2, Nokia Lumia 900 or HTC Titan 2? Which Windows Phone 7.5 is it going to be for you? Here is a head-to-head spec comparison between the trio, to make it simpler for you to decide and know as to how they will stack up against each other in the Windows war and also if Focus 2 is capable enough of become a stiff competitor against the heavyweights Nokia and HTC.

Form Factor

The wallet-friendly Samsung Focus 2 with 4-inch Super AMOLED screen display, along with 480 X 800 pixels of resolution on a spectacular white-bodied device with curved edges that are similar to slim Galaxy S2 style. Taking about phone dimensions it would measure around 121.7 x 62.7 x 11 mm with a weight of 122 grams.

On the other end, The Lumia 900 sports rounded edges and flat top and bottom look, has the same vivid display but has a slightly bigger 4.3-inches Clear Black AMOLED screen with the same 480 x 800 pixels of resolution but is backed by strong, scratch-resistant Corning Gorilla Glass. Further, Nokia's latest handset will have dimensions of around 127.8 x 68.5 x 11.5mm with a weight of 160 grams.

Leaving behind both, HTC Titan II boasts a wickedly larger 4.7-inches Super LCD display with 480 x 800 pixels of resolution and it would come in the dimensions of 132 x 69 x 13mm and would weigh around 147grams.

Camera

In this category, Focus 2 is equipped with 5 MP rear-facing primary camera to record 720p HD videos, along with front-facing VGA shooter (1.3 MP) for forwarding video chats.

While, Lumia 900 comes packed with 8 MP primary camera with a Carl Zeiss lens at 3264 x 2448 pixels of resolution including new features like autofocus, geo-tagging, dual LED flash and 720p video capture. And there's also a higher 1 MP rear facing camera, similar to its predecessor, the Lumia 800.

However, HTC Titan II scores here again, thanks to an impressively 16-megapixel primary camera with a wide-angle lens, backside-illuminated sensor and 4640 x 3480 pixels of resolution. Further the Titan II also boasts a fast wide-angle lens (f2.6, 28mm), an additional front-facing 1.3 megapixels camera and it can also capture video in 720p HD and features autofocus, dual LED flash, red eye reduction, image stabilization, panoramic shot mode and burst shot mode.

Processor and RAM

All the three phones are clocked with Qualcomm Scorpion processor; however, there is still a slight difference among the three.

Samsung Focus 2 and Nokia Lumia 900 run on the same 1.4GHz clock-speed, however, Lumia 900 has the MSM8255T Snapdragon chipset, along with the same Adreno 205 graphics processing unit (GPU).

Talking about HTC Titan 2, it has a slightly higher clock-speed at 1.5GHz and it also uses the same MSM8255T Snapdragon chipset and GPU combination, like Lumia 900. Further, all the three devices run at 512MB RAM.

Operating System

Well, in this segment, the three smartphones have a common operating system. They run on Windows Phone 7.5 Mango, which boasts features like dynamic Live Tile Information, Twitter and LinkedIn integration in the People hub, Facebook-events integrated calendar, threaded e-mail conversations support, visual voicemail, Outlook tasks support and much more. Other features of the OS include Shazam-like audio recognition, turn-by-turn Bing Maps navigation with voice guidance, Skydrive and Office 365 documents synchronization with PDF support, Microsoft Lync support, animated picture tiles, People/Groups gallery with Skydrive and Facebook sync, People Hub-integrated photo management, Zune SmartDJ multimedia mix support, video aspect ratio control capability while playback and more.

Storage

Samsung Focus 2 over here has only 8GB Internal Storage, in comparison, Nokia's Lumia 900 and HTC Titan 2 have a higher 16GB of internal storage. However, all the three Windows phones do not support microSD card slot storage for memory expansion.

Connectivity

The most impressive spec of the three devices is the 4G LTE capability with the support of AT&T network, which is a good sign for the Windows Phone platform. Also, the three phones will get the support for rolling back to AT&T's HSPA+ network if the user is outside the LTE coverage.

Further, the smartphones sport an 802.11 a/b/g/n Wi-Fi connection and have 2.1+A2DP Bluetooth.

Battery

Samsung Focus 2 is loaded with Li-Ion 1750mAh battery; hence the device will offer maximum standby time of 624 hours and talk time of 6 hours.

Over here, HTC Titan II has a slightly lower standard Li-lon 1730 mAh battery, offering a talk time of 4.3 hours and standby time of 293 hours.

Compared to both, the Nokia Lumia N900 has a standard Li-lon 1800 mAh battery with up to 300 hours of stand-by, 7 hours of talk time and 60 hours of music play.

Well, these are all the details which could be offered to you to decide upon the purchase of the handsets. Hence, as a personal advice, they all are differently priced phones with a different set of unique features, logically attracting a different set of consumers and covering all aspects of options of a Windows phone. Regarding, Samsung Focus 2, the device does have a few things in common with the hefty Lumia 900 and HTC Titan 2, which can force a first-time buyer to think over the aspects of the phone against the biggies.