HTC has launched a premium One series at this year's Mobile World Congress. The series comprises three smartphones as of now - HTC One S, HTC One X and HTC One V. The best of the three is undoubtedly the HTC One X. The phone has already been receiving raving reviews and it has even been tagged as the King among the Android phones.

Meanwhile, the Taiwan-based company has launched an iteration of its flagship Titan, dubbed as Titan II. The name clearly bears mythological flavor but as reviewers we must tell you, the phone is as solid as the name sounds and performs quite well. In this regard, we should also mention that the Titan II is a Windows phone and is launched on AT&T along with the Nokia Lumia 900.

Although the Titan II lags quite behind the Nokia flagship phone, we still believe that the it will catch up with all the existing phones and give the toughest battle to all soon as it receives some updates from HTC.

Let's check out how the two HTC phones stack up against each other.

Size: HTC Titan II comes with a dimension of 132 x 69 x 13 mm and weighs 147 grams. It is indeed a chunky piece of device when compared to HTC One X, which comes with a dimension of 5.1 x 2.5 x 0.30 mm and weighs 119.5 grams. While the size specification clearly says that the One X is the latest entry in the breed of today's super-slim Android handsets, the other HTC phone reminds us that we have entered the era of extra-large phones (read Galaxy Note) and is a new entry in the list of behemoth and solid phones.

Having said that, we must also mention that the Taiwanese company has made it in such a curved and tapered way that it is very easy to not only hold but also keep in the pocket. The soft finish and beveled edges add sophistication to the Titan II and feels as good as the pleasant curves of the HTC One X.

Display: In case you want to see some path-breaking feature in your smartphone, then Titan II will definitely be your choice as nothing out-of-box has been introduced in the latest Titan phone. The company has stuck to the basics. The phone is almost identical to its predecessor, the original HTC Titan.

The phone touts a 4.7-inch display with 800x480-pixel WVGA resolution. The Taiwan-based company has maintained the same Super LCD touch screen like its predecessor, the first Titan.

On the other hand, the One X sports a same large 4.7-inch display but the resolution of HD Super LCD 2 screen is much higher (1,280x720 pixels) than that of the Titan iteration.

Processor: Again the company has retained the same 1.5GHz Qualcomm MSM8255 Snapdragon processor just like the one used in its predecessor. The performance of this Windows phone may not be groundbreaking but is still rock solid. The Titan II is quick and we have not faced any lag as of now. The phone comes with 16GB of internal flash memory and no external memory slot.

One X, however, comes in two variants. While AT&T will offer a dual-core Qualcomm Snapdragon S4 Krait processor clocked at 1.5 GHz, the international model will come with a 1.5 GHz quad-core Nvidia Tegra 3 CPU. The international version embeds 32GB of internal memory but the AT&T HTC One X comes with only 16GB internal memory and no external memory slot, 1GB of RAM and an Adreno 225 graphics processing unit.

Operating System: CNET said that the Titan II raises the bar for Windows Phone devices and we do believe the same.

Titan II, running on Window's latest OS Mango, might fall behind a little with the latest Ice Cream Sandwich, yet the recent updates introduce Twitter integration, threaded conversations and improved Bing search. The phone has Metro UI, which makes the interface vibrant, intuitive and engaging.

The HTC One X comes with Android's latest Ice Cream Sandwich OS and sports a sleek HTC Sense 4.0 user interface.

As we are bound to compare the two phone's UI and OS, HTC One X is a clear winner in this section.

Camera: 

One of the major plus point of the new Titan phone is its grand 16 MP primary phone. The camera with its backside-illuminated sensor snaps fantastic pictures. The phone also comes with a 1.3 MP front camera for video chatting.

One X comes with an 8 megapixel snapper and new image chip, f2.0 aperture, 28mm lens and backside-illuminated sensor.

The company has also provided the upgraded Sense 4.0 in the camera, which now lets the user tweak manually and capture up to 99 continuous pictures by holding down the shutter. The phones sport a 1.3 megapixel camera in the front for video calling. Both the cameras in One X record HD videos in 1080p and 720p, respectively.

Camera Features: The Titan camera offers a host of stunning features such as smile capture, face detection, manual ISO, burst mode and panorama along with an array of some special scene modes. 

The One X, on the other hand, sports almost similar camera features like Geo-tagging, touch focus, face and smile detection, image stabilization.

3G/4G: Both the HTC phones connect on AT&T network. For Titan II, the tested speed is around 8-13Mbps HSDPA and 1-2Mbps HSUPA, which is certainly impressive compared to that of the One X, which is expected to support HSDPA 21 Mbps, HSUPA 5.76 Mbps. Both phones support AT&T's 4G LTE.

WLAN/Bluetooth/USB: Both the phones have Bluetooth 3.0 version with A2DP and microUSB 2.0 version. Also both the phones have Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, and Wi-Fi hotspot.

Battery: Titan II comes with 1,730mAh battery, which is not as large as we would have expected but does perform decently. HTC claims that the phone will work continuously without charging for 14 days on standby, can provide up to 4 hours of continuous talk time, and play audio for 20 hours flat.

Non-removable One X comes with a standard Li-ion 1800 mAh battery that is already facing criticism from the reviewers. But improvement in the battery life is on the cards once the company brings the software update.

Pricing: While the US price for the HTC phone has still not been revealed, it is expected to come with a tag of anything between $250 and $300 with a two-year agreement on AT&T. The HTC Titan II is available with a price tag of $199.99.