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.

But the S5 pushes the screen to only 5.1 inches (13 cms), measured diagonally, from 5 inches (12.7 cms) in last year's model. Instead of size, Samsung touted the new phone's ability to adapt its screen to changing external conditions and to dim it to avoid disturbing others nearby.

The phone has a 16 megapixel camera, sharper than the 13 megapixels in its predecessor. It promises faster auto focus and the ability to blur the foreground or background of an image to emphasize a subject.