
Atrix and ThunderBolt
The Motorola Atrix 4G is a little lighter and slimmer then the ThunderBolt, weighing 135 grams and having a thickness of 10.95 mm, while the HTC Thunderbolt weighs 164 grams and is 13 mm thick. By comparison, the the Galaxy S II is much thinner and lighter weighing in at 125.3g and only 8.5 mm thick.
In terms of display and screen size, the Thunderbolt has a 4.3-inch display with a resolution of 480 x 800 pixels, while the Atrix features only a 4-inch screen with a 540 x 960 pixel resolution but has the world’s first qHD display. The Galaxy S II comes with a glorious 4.3-inch touch-sensitive display and incorporates a new technology called "Super AMOLED Plus" that increases the image quality up to 50%.
Heading to the camera section, here the HTC Thunderbolt beats the Motorola Atrix 4G with its 8 MP rear-facing camera, with autofocus, dual-LED flash, and a second 1.3 MP front-facing camera. The Atrix comes equipped with a 5 MP camera on the back, with autofocus and LED flash, and a secondary VGA camera up front. Similar to the Atrix, the Galaxy S II is equipped with a rear 8 megapixel camera with autofocus LED flash, but different video recording size: 1080p for the Galaxy S II. The Galaxy S II adds also a smaller front-facing camera with 1.3 MP for video calling. While the cam is an important and strong feature for the first two, Galaxy S II impresses more, being loaded with other essential features such as touch focus, smile, face detection and image stabilization.
The software is a very important factor when deciding between three handsets. In this regard, here the choice is quite simple, since the first two devices run Android 2.2, aka Froyo (although the Atrix 4G might feature the Gingerbread version once it gets released). The Samsung Galaxy S II will run on the latest version of Android 2.3 Gingerbread. The Galaxy S II is also equipped with an improved version of interface, TouchWiz UI 4.0.
Interested about the connectivity feature? We see that both the Atrix and the ThunderBolt support Bluetooth and WiFi 802.11b/g/n. The ThundeBolt will support VZW's 4G LTE network and as its name suggests, the Atrix 4G will also feature 4G connectivity but only on AT&T. The Samsung Galaxy S II will arrive with Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, stereo FM radio (with RDS), optional NFC support, a digital compass, gyroscope, super-fast HSPA+ connectivity, Bluetooth 3.0 and an HDMI port all on the super fast Verizon 4G LTE network.
Now let’s see what these smartphones offer in terms of hardware. The Motorola Atrix 4G whoops on the ThunderBolt in this category, because it comes equipped with a powerful 1GHz NVIDIA Tegra 2 Dual Core processor and 1GB of RAM, while the HTC Thunderbolt features a Qualcomm Snapdragon 1 GHz processor (same as the older Incredible) and only 768 MB of RAM. The Atrix also come with 16 GB of internal storage space and a microSD card slot which supports up to 32GB, while the Thunderbolt features a pre-installed 32 GB microSD card, but only 8GB of internal space. The Galaxy S II comes with a powerful 1GHz dual-core ARM Cortex-A9 processor. The G-S II comes with 1GB of RAM plus 16 GB storrage expandable up to 32 GB on-board via a microSD card, as well as up to 32 GB external via a microSD card.
IMHO, the CLEAR winner is the Samsung Galaxy S II. From display and camera(s), to software and connectivity; from screen size, thickness and weight to the 4G mobile networks; from the CPUs to the GBs the NEW Galaxy S II is out of this world and poised to be the apex of smart phones in 2011.

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