Samsung claims to have sold 5 million Galaxy Note units globally in just five months after its launch in October. What makes Samsung's revolutionary phablet so popular?

The first point is the unique combination of the size of a tablet and the features of a smartphone. Although experts have criticized the size of the phone as being odd, it has been a factor of curiosity amongst smartphone lovers who are looking out for something new.

The Korean electronics giant has not only played its ace card with the size but also packed in a 1.5 GHz Scorpion dual-core processor, a 5.3-inch AMOLED display, 8 megapixels rear camera, 2 MP front camera for video calling, 16GB storage, 1 GB RAM, S Pen stylus for sketching and making notes and Wi-Fi 802.11 a/b/g/n, Li-Ion 2500 mAh and AT&T's 4G LTE connectivity.

With stunning features and a jaw-dropping size, Galaxy Note makes any other large phone look frail in comparison. And the latest HTC One X too will not be an exception, believe Samsung fans.

The Taiwan-based company has unveiled a series of high-end Android smartphones at the Mobile World Congress in this February. Although the series consists of three phones - HTC One X, HTC One S and HTC One V, One X has been tagged as the king among Android smartphones thanks to the stunning features that HTC has packed in it.

One X features a polycarbonate unibody shell with a 4.7-inch Gorilla Glass 720p screen, a 1.5 GHz quad-core processor and a 12-core NVIDIA graphics processor. It will also be available in a 4G LTE model.

The phone features Android's latest OS Ice Cream Sandwich with HTC's latest Sense 4.0 interface which makes the phone superbly fast and slick, an 8 megapixel camera and, of course, the Beats Audio.

But the question is - How does One X stand against the phablet which has already created a fan following?

Check out the comparison of two smartphones.

Size: Galaxy Note comes with a dimension of 146.8 x 83 x 9.7 mm and weighs 178 grams. While Samsung is raving about the pocketable size and light weight of the Note, negative reviews about the awkward size of the hybrid phone has never stopped pouring in.

HTC One X, when compared, sports a bold and simple physical styling. The phone comes with a dimension of 130.9 x 65 x 7.8 mm and weighs 119.5 grams. But with its gigantic 4.7-inch display, this is another phone that traverses into the mini tablet territory and is also not a phone which can be carried in pocket. The HTC phone, however, is the latest entry in the breed of today's super-slim Android handsets.

Display: Galaxy Note sports a 5.3-inch high-definition Super AMOLED with a display of 1280 x 800 pixels and about 285 ppi pixel density. Nice and sharp resolution for a phone of its class but less crispier than that of the 316 ppi pixel density of the HTC One X thanks to the AMOLED display, videos and photos look stunning in the phone.

The HTC phone, on the other hand, comes with a massive 4.7-inch, 1280×720 super LCD display. Its rich pixel density makes onscreen images look bright and sharp.

Display Protection: Both the phone use the Corning Gorilla Glass.

Processor: The Galaxy Note sports a dual-core 1.5GHz Scorpion CPU Qualcomm MSM8660 Snapdragon Adreno 220 GPU with 1GB RAM which results in silky smooth user experience.

One X packs the mighty 1.5GHz quad-core Tegra 3 processor with 1 GB of RAM. The phone is furiously fast.

Operating System: The Galaxy Note has the Android 2.3 Gingerbread operating system with the promise of an upgrade to Google Inc.'s latest smartphone OS, Android 4.0 Ice Cream Sandwich. The phone also sports Samsung's TouchWiz UI version 4.0 plastered on top.

The HTC phone too comes with ICS and sports a sleek HTC Sense 4.0 user interface.

Storage:  Galaxy Note has fixed 16GB internal storage with a microSD card slot to expand the phone memory up to 32GB. The HTC phone does not come with external storage but boasts of 32GB. And the company has partnered with the Dropbox which results into an extra 25GB of storage free for two years.

Camera: The Note sports a rear 8 megapixel LED flash camera with 1080p HD video capture capability. A 2 megapixel front camera is also included for self-shots and video calls.

The HTC smartphone has an 8 megapixel snapper and new image chip, f2.0 aperture, 28mm lens and backside-illuminated sensor.

Also, the company has 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 phone sports a 1.3 megapixel camera in the front for video calling.

Camera Features: Both smartphones sport almost similar camera features like Geo-tagging, touch focus, face and smile detection, image stabilization.

3G/4G: Both the phones support HSDPA 21 Mbps, HSUPA 5.76 Mbps and 4G LTE.

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

Battery:  Galaxy Note comes with a standard Li-ion 2500 mAh battery that gives up to 252 hours of stand-by time and 10 hours of talk-time. On the other hand, One X comes with a standard Li-ion 1800 mAh battery that is already facing criticisms from the reviewers. But improvement in the battery life is on the card once the company brings the software update.

Pricing:  Galaxy Note is priced at $299 with a two-year AT&T contract in selected areas, while the US price for the HTC phone is still not revealed.