AT&T introduces the first 4G LTE Windows Phone in the world, the Samsung Focus 2 (model SGH-I667UWAATT), at the CTIA 2012. Powered by a 1.4GHz processor, the handset runs Windows Phone 7.5 Mango operating system. The second generation Focus features a 4-inch 480×800 Super AMOLED touchscreen display, anda 5 Megapixel with autofocus and HD 720p video recording and a VGA front camera for video chat. As the first LTE Windows Phone, it works on LTE dual-band 4/17 network and supports quad-band GSM/EDGE and tri-band UMTS 3G as well.

Nokia introduces its fourth and most affordable Lumia smartphone, the Lumia 610 running Windows Phone 7.5 Mango OS. The new headset is boosted by a Qualcomm SnapDragon 800MHz processor with 256MB of RAM. It comes with 8GB storage and has no microSD slot.

Nokia’s Lumia 900 is a new high-end smartphone running Windows Phone 7.5 Mango operating system. In addition to the LTE 4G version announced earlier, Nokia is also launching the DC-HSPA variant supporting up to 42Mbps download in regions where LTE is not available. The handset is powered by a Qualcomm 1.4Ghz single-core processor with 512MB of RAM, and comes with 16GB internal memory. In fact, the Lumia 900 is like a Windows Phone version of the company’s Meego-powered N9, featuring the same slim, sleek body.

ZTE brings to the MWC 2012 the Orbit, an entry-level smartphone running Windows Phone 7 Tango operating system. The Orbit is powered by 1GHz processor with 512MB of RAM, comes with …

Nokia Lumia 800

Nokia announced the Lumia 800 and Lumix 710 smartphones running Windows Phone 7.5 Mango operating system. These devices are Nokia’s first Windows Phone devices. The former, looks like the N9, has a “head-turning design” and comes in cyan, magenta and black colors, while the latter is a more affordable option that comes in in black and white with black, white, cyan, fuchsia and yellow back covers.

Other than the flagship TITAN, HTC also brings the Radar, a more affordable Windows Phone 7.5 Mango smartphone. It sports a smaller 3.7-inch 480×800 touchscreen, a 5 megapixel camera with F2.2 lens, LED flash, BSI sensor and 720p HD video recording, a VGA front camera, Bluetooth, GPS capability and WiFi connectivity. It has an aluminum unibody.

HTC announced the new TITAN (aka Eternity) smartphone running Microsoft’s new Windows Phone 7.5 OS, codenamed Mango. The phone is boosted by a 1.5GHz processor with 512MB of RAM. It sports a 4.7-inch large 480×800 touchscreen, a 8 Megapixel camera with F2.2 lens, dual LED flash, BSI sensor and 720p HD video recording, and a 1.3 megapixel front camera.

KDDI au is launching the IS12T Windows Phone by Fujitsu Toshiba, which is the world’s first smartphone to run Windows Phone 7.5 Mango operating system. The new Windows device is powered by Qualcomm MSM8655 processor. It has a 3.7-inch 800×480 capacitive touchscreen and a 13.2 Megapixel CMOS camera.

HTC’s HD7 Windows Phone 7 smartphone has been available from T-Mobile for a white. AT&T is going to release it own version that is called HTC …

HTC Pyramid render

Here are renders of HTC’s three upcoming smartphone devices, Pyramid, Prime and Ignite, posted on Chinese site xda.cn. The Pyramid is an Android phone powered by dual-core processor. It has a 4.3-inch large 960×540 touchscreen, a 8 Megapixel main camera, a 1.3 Megapixel front camera.