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When is a touchscreen not a touchscreen? Increasingly, it's when your smartphone reads your eyes, gestures and movements to perform basic functions without tapping the screen at all. That was Samsung's point Thursday with the rollout of the new Galaxy S IV, the latest from the company's flagship line and the first Android-based phone to seriously challenge Apple's iPhone for dominance in the mobile market. The phone will be available on all major U.S. carriers by the end of April.

Apple Inc marketing chief Phil Schiller attacked Google Inc's "fragmented" Android software and its biggest adopter, Samsung Electronics, a day before the Korean firm takes the wraps off its latest flagship smartphone in the United States.

Scientists in Tanzania turned an iPhone into an amateur microscope to check schoolchildren for intestinal worms.

The BlackBerry (NASDAQ:BBRY)/(TSE:BB) Z10 is finally available for U.S. pre-order—on T-Mobile, at least. AT&T’s debut is tomorrow; Verizon’s next month, probably. On the one hand, it could be a case of “too little, too late” for the Canadian smartphone maker (formerly Research In Motion).

Google says it's cutting an additional 1,200 jobs in its Motorola division as the unprofitable cellphone maker struggles to compete.

South Korean phone-maker Samsung loses another patent fight against rival Apple, in the UK High Court.

New features Samsung reportedly plans to include in its next-generation Galaxy S IV smartphone have been revealed in a series of leaked screenshots. The images show various pages within the settings on Samsung’s custom version of Android 4.2.1 Jelly Bean, and they detail some intriguing new functionality coming to the Galaxy S IV as well as an update due to hit Samsung’s current flagship phone, the Galaxy S III.

Samsung is trying to build excitement for its next Galaxy phone ahead of a big media event on March 14, releasing a teaser ad for the device on Monday. The ad stars a child, Jeremy Maxwell, who is, for whatever reason, chosen by Samsung to be the “secret messenger” charged with carrying the company’s next big release to the conference himself.

More than 20 percent of black and Hispanic teens say they have used their cellphones to send a "sext" message showing a nude or semi-nude photo or video of themselves to another person, and more than 30 percent say they have received such sext messages, according to a new study.

Google’s short-term goals for its Motorola smartphone division are two-fold: clear the rubble on the runway and build for the future.