Samsung unveils Galaxy S5 smartphone with larger display and heart-rate monitor

Samsung sought Monday to frame its new Galaxy S5 smartphone as a lifestyle product, as it emphasized a built-in heart-rate sensor and improved camera features over its slightly larger size.

One of the main appeals of Samsung phones has been their size. The screen has steadily increased since the 4 inches (10.2 centimeters) on the original S from 2010, while the iPhone made that jump to 4 inches only in 2012 and has stayed that way since.

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