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The Samsung Galaxy S4 is a 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 an 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. The iPhone 5 is a touchscreen-based smartphone developed by Apple Inc.. It is the sixth generation of the iPhone and succeeds the iPhone 4S. The phone is a slimmer, lighter model that introduces a higher-resolution, 4-inch screen to the series with 16:9 widescreen aspect ratio. The phone also includes a custom-designed ARMv7 processor called the Apple A6, an update to Apple's mobile operating system known as iOS 6, and support for LTE. The HTC One is an Android smartphone developed by the Taiwanese manufacturer HTC. The device serves as a successor to HTC's 2012 flagship phone, the One X—a device that was critically acclaimed, but commercially unsuccessful due in part to poor marketing efforts. The HTC One was developed with an emphasis on unique hardware and software features, such as an aluminum casing, a new image sensor implementation for its camera, stereo speakers, a revised version of HTC's Sense user experience, and other new software functionality such as the "BlinkFeed" news aggregator and "Zoe" camera features.