The Samsung Galaxy S2, which is considered the best Android smartphone yet, received rave reviews from around the world since its launch. With its 4.3 16M-color Super AMOLED Plus capacitive touchscreen of WVGA (480x800 pixel) resolution, TouchWiz 4 launcher, 16/32GB internal storage and 8 megapixel wide-angle lens autofocus camera with LED flash, face, smile and blink detection, has amazed its users and reviewers.

Droid 4, on the other hand, is Motorola's first smartphone that combines 4G LTE with a QWERTY keyboard. According to Verizon, which is launching this new smartphone for $199 with a two-year contract, the Droid 4 is the thinnest and most powerful 4G QWERTY smartphone measuring at less than half an inch thin.

Check out the comparison of the features of two great phones Galaxy S2 and Droid 4 and see how they are going head-on-head.

Size: The new Droid 4 comes with a dimension of 126.7x69.9x12.9 mm and weighs 178.9 grams. The phone features a QWERTY keypad and Touch-sensitive controls technology. The Galaxy S2, on the other hand, comes in 125.3x66.1x8.5 mm dimension and weighs 116 grams.

Display: The Samsung Galaxy S2 sports a 4.3-inch 800x480 pixels Super AMOLED Plus capacitive touch-screen with 217 ppi pixel density. The newer Droid, on the other hand, sports a smaller 4-inch TFT capacitive touchscreen with 960x540 pixels and 275 ppi pixel density.

Display Protection: S2 comes with a scratch-resistant Corning Gorilla glass protection and sports TouchWiz user interface version 4.0. Display of Droid 4 is designed to resist scrapes and scratches and water attacks and a force field of water-repellent nanoparticles shielding the phone against water attacks. The same technology has been used in this phone to protect the electrical boards inside.

Operating System: Motorola and Samsung both the smartphones run on Android 2.3 Gingerbread and are upgradable to Google's latest operating system Android 4.0 Ice Cream Sandwich. The Korean electronics giant, Samsung, has announced that the Ice Cream Sandwich update for Galaxy S2 will be available on March 1.

Processor: Motorola packs a Dual-Core 1.2GHz with a Dual-Channel 1 GB RAM, TI OMAP 4430 chipset and PowerVR SGX540 GPU for the Droid 4 while the Galaxy S2 features a dual-core 1.2GHz Cortex-A9, Exynos processor with 1 GB RAM.

Memory: The new Motorola smartphone comes with 16 GB internal storage that can be expanded up to 32GB via microSD card. The Galaxy S2 has internal memory configurations of 16/32GB and an external microSD card that allows it to expand to another 32GB.

Camera: The Droid 4 phone sports 8 megapixel 3264x2448 pixels unit autofocus, LED flash rear facing camera with 1080p video capture capabilities. A 1.3 megapixel front-facing camera with 720p video capture capabilities has also been included in the new Motorola phone. The Galaxy S2, same as Droid 4, comes with an 8 megapixel 3264x2448 pixels unit with 1080p video capture capabilities and a secondary 2 megapixel camera for video calling.

Camera Additional Features: The S2 camera has features like autofocus, LED flash, Geo-tagging, touch focus, face and smile detection and image stabilization and the Droid 4 camera also includes features like Geo-tagging, face detection, image stabilization, cropping, rotating, brightness, color, enhance, flip, resizing and effects.

3G/4G: Galaxy S2 supports download speed of 21 Mbps and upload speed of 5.76 Mbps and does not support LET. The Droid 4, on the other hand, connects to Verizon's CDMA Rev A and LTE networks without global roaming.

WLAN/Bluetooth/USB: The Motorola smartphones has Wi-Fi 802.11 b/g/n, Wi-Fi hotspot, Bluetooth version 4 with LE+EDR, DLNA version 1.5 and microUSB 2.0 versions. Samsung Galaxy S2 comes with Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot, Bluetooth version 3 and HS, USB version 2.0 with microUSB (MHL), USB On-the-go features. Galaxy S2 also provides Near Field Communication technology as an optional feature.

Battery: Motorola Droid 4 has a standard Li-Ion 1785 mAh Li Ion battery that can give up to 12.5 hours of continuous talk-time and up to 205 hours of standby time. The speed surpasses any other smartphones at 4G Web surfing.

Galaxy S2 comes with a standard Li-Ion 1650 mAh battery that gives stand-by time of up to 710 hours for 2G and up to 610 hours for the 3G and talk time of up to 18 hours 20 min for 2G and up to 8 hours 40 min for 3G. Motorola wins hands-on in this battery department.

Other Features: The Droid 4 boasts of features like HTML5, Adobe Flash, an Accelerometer, proximity and a compass, MP3/WAV/WMA/eAAC+ player, MP4/H.263/H.264/WMV player, SNS integration, HDMI port, voice navigation, voice memo/dial, predictive text input, document viewer and a photo viewer/editor. The Motorola also comes with FOTA, PC Sync, Corporate Sync, Google Sync features and Verizon Visual Voice Mail. The Android phone integrates Google Search, Maps, Gmail, YouTube, Google Talk, Google Quick Search Box, Google eBooks, Google Search by Voice. GPS feature includes aGPS (assisted), eCompass, sGPS (simultaneous) and GLONASS.

Galaxy S2 also sports same features like active noise cancellation with dedicated mic, TV-out (via MHL A/V link), SNS integration, MP4/DivX/XviD/WMV/H.264/H.263 player, MP3/WAV/eAAC+/AC3/FLAC player, Organizer, Image/video editor, Document editor (Word, Excel, PowerPoint, PDF), Voice memo/dial/commands and Predictive text input (Swype). Like any other Android phone, Galaxy S2 also integrates Google Search, Maps, Gmail, YouTube, Calendar, Google Talk, Picasa.

Droid 4, however, is a newly launched phone whereas Galaxy S2 is ruling the smartphone market for past few months and has built a strong fan-base. The fight among these two great phones will be interesting to see in coming days.

Check out the video of unboxing Motorola Droid 4.