The first redesign of the software in three years puts emphasis on touch-based controls and online subscriptions.

Samsung said quarterly profit soared 76%, boosted by the popularity of its Galaxy smartphones.

Quarterly profit up 76% as its Galaxy smartphone outsells the iPhone for a fourth straight quarter.

Google eked out slightly higher earnings in the fourth quarter, despite a financial drag caused by the Internet search leader's expansion into device manufacturing.

More advertising goes digital, and poured into Google during the holiday shopping season.

For many investors, Apple's best days are behind it.

Samsung was quick to close the gap in the smartphone market between itself and other large device makers.

Samsung Electronics says global sales of its Galaxy S smartphone series surpassed 100 million units since the first model was launched less than three years ago.