The Samsung Galaxy S2, the upgraded version of Galaxy smartphone, is a beautiful android mobile handset equipped to wow many users. The Galaxy S2 incorporates appealing contours and upgraded technology, while HTC's Thunderbolt 4G has LTE capability.

Here is a look at how both these smarpthones fare compared to each other.

The Galaxy S2 has a 125.3 x 66.1 x 8.5 mm and weighs 116 g. Thunderbolt 4G is 122 x 66 x 13 mm and weighs 164 g.

HTC’s Thunderbolt and Samsung Galaxy S2 both have a 4.3-inch 480 x 800 pixel display but Thunderbolt has a TFT capacitive touchscreen while Galaxy S2 comes with a Super AMOLED Plus capacitive touchscreen.

The input features found in HTC’s smartphone are an accelerometer sensor for UI auto-rotate, proximity sensor for auto turn-off, HTC Sense 2.0 UI and multi-touch. The Galaxy S2 has features like TouchWiz UI version 4.0, multi-touch input, accelerometer sensor for UI auto-rotate, touch-sensitive controls, proximity sensor for auto turn-off, gyroscope sensor and Swype text input.

Samsung’s smartphone features more memory as it has 1 GB RAM and 16GB, 32GB internal storage whereas the Thunderbolt has 768 MB RAM and 8 GB storage along with microSD support up to 32 GB. But the Thunderbolt has an added 32 GB included.

Samsung Galaxy S2 will most probably have the HSDPA 21 Mbps and HSUPA 5.76 Mbps support, while HTC’s smartphone has Verizon’s Rev. A up to 3.1 Mbps along with LTE.

WLAN/Bluetooth/ USB:
The Wi-Fi 802.11 b/g/n DLNA is common in both the smartphones but the Galaxy S2 has an added Wi-Fi Direct feature. The Bluetooth version found in Thunderbolt is 2.1 with A2DP and EDR while Galaxy S2 has version 3.0+HS. Thunderbolt has microUSB version 2.0 and Galaxy S2 has version 2.0 microUSB (MHL).

The camera found in the Galaxy S2 is 8-megapixel 3264x2448 which comes with autofocus, LED flash, geo-tagging, touch focus, face and smile detection and image stabilization. While Thunderbolt 4G has 8-megapixel 3264x2448 pixels camera with autofocus, dual-LED flash, geo-tagging and face detection. There is a 2-megapixel secondary camera in Galaxy S2 and 1.3-megapixel camera in Thunderbolt 4G. The Galaxy S2 is capable of 1080 at 30fps video capture while Thunderbolt can capture video at 720p.

Operating System and Processor:
The operating system that comes with Thunderbolt is Android OS version 2.2 (Froyo). Samsung Galaxy S2 will have Android OS version 2.3 (Gingerbread).

The Thunderbolt features a single core 1GHz Scorpion Adreno 205 GPU Qualcomm MSM8655 Snapdragon processor as against Galaxy S2’s dual-core 1GHz ARM Cortex-A9 Mali-400MP GPU Orion chipset processor.

With a battery capacity of Li-Ion 1650 mAh, Galaxy S2 leads when compared to HTC Thunderbolt’s Li-Ion 1400 mAh battery.

Other Features:
The common features found in both the smartphones are SMS threaded view, MMS, Email, Push Email, IM, HTML browser, stereo FM radio with RDS, A-GPS support, digital compass, organizer, Google Search, Maps, Gmail, YouTube, Google Talk, Picasa integration, voice memo-dial-commands and predictive text input.

Also the other features found in the HTC Thunderbolt include video Skype, SNS integration, built-in kickstand, MP3/AAC+/WAV/WMA9 player, DivX/Xvid/MP4/H.263/H.264/WMV9/player and document viewer.

The Galaxy S2 has other features like RSS, Java via third party application, NFC support optional, TV-out via MHL A/V link, MP4/DivX/XviD/WMV/H.264/H.263 player, MP3/WAV/eAAC+/AC3/FLAC player, image and video editor and document editor (Word, Excel, PowerPoint, PDF).

Samsung is planning to introduce the Samsung Hub, which will bring users over 2 million books, games from Gameloft and 12 million selections from 7 digital.

Here is the latest video featuring Samsung Galaxy S2:

The HTC Thunderbolt 4G smartphone will be available on March 17 for $249.99 with a 2-year contract with Verizon, with hotspot capability an extra $20 per month. HTC Thunderbolt to be the first smartphone with LTE to market.

Here is a video of Thunderbolt 4G: