Samsung S4

The Samsung Galaxy S4 is a high-end smartphone manufactured by Samsung Electronics. It was announced in New York City on March 14, 2013^[5][6] as the successor to the Samsung Galaxy S III. The phone has many distinguishing software features such as Air Gesture, Smart Stay, and Smart Scroll; a 13-megapixel back camera, and a 5-inch (130 mm) 1080p display.^[5][6] It is the first TCO certified smartphone.^[8] The S4 has two major variants, one featuring a quad-core Qualcomm Snapdragon 600 and the other featuring a Samsung Exynos 5 Octa. The Exynos 5 Octa version features the first big.LITTLE architecture central processing unit (CPU) but does not have LTE connectivity. The CPU has eight cores, four of which can be active at one time to emulate a quad-core processor.^{[clarification needed]}
The S4 was made available in late April 2013 on 327 networks worldwide and in 155 countries.^[9] Upon its release, it became the fastest selling smartphone in Samsung's history, Samsung sold 20 million Galaxy S4 units worldwide in that two months following the device's launch.^[10] Google released a version of the U.S. Galaxy S4 running stock Android with Samsung-provided updates. Samsung has announced that they will be releasing a "mini" variant of the S4, a "Zoom" variant,^[11] and an "Active" variant with a water resistant IP 67 case, shock resistance, and an 8 megapixel camera. On June 17, 2013 JK Shin, vice president of Samsung Mobile announced that the Samsung Galaxy S4 is to have another variant with LTE-Advanced connection, which is twice the speed of 4G LTE.^[12]   

Nokia Lumia

The Nokia Lumia is a series of smartphones from Nokia first introduced in November 2011, all of which use the Windows Phone operating system. The Lumia name is derived from the partitive plural form of the word Lumi which means snow in the Finnish language.
As Nokia lost smartphone market share in 2010 mainly due to the rise of Android, they decided to move away from the Symbian platform and adopt Windows Phone as their primary smartphone OS to catch up. Nokia made a partnership with Microsoft on February 11, 2011 where both companies would work together to promote the platform and build a smartphone ecosystem. Nokia continued to develop and release Symbian smartphones as well as MeeGo when the Lumia line was first released.
For the first generation Lumias, first showcased with the 800, Nokia's advertising tagline was The Amazing Everyday. Nokia exclusively used DJ TEED's song Garden in TV advertisements of the first generation Lumias. For the second generation Lumias, Nokia uses the taglines #SWITCH and This is Lumia.

Sony Xperia

Sony Xperia is the family of Sony smartphones and tablets. The line of phones has been manufactured since 2008, while the first tablet released under the brand was launched in 2012. The name Xperia is derived from the word "experience", and was first used in the Xperia X1 tagline, "I (Sony Ericsson) Xperia the best".