• Facebook reports that mobile use exceeded PC use for the first time ever in Q4 2012.
• In just five short months since its release, Apple’s iOS 6 is now powering a whopping 300 million devices around the world.
• As the app store giants continue to jostle for first place, Apple's App Store hits record revenue numbers while Google Play boasts faster growth.
• During Q4 2012, Apple sold more smartphones than any other seller in the U.S. market, a first for the company.

During its Q4 earnings report last week, Facebook announced that, for the first time, it has more mobile users than desktop users and also hinted at plans for improving mobile ad targeting and relevance, critical to building its mobile ad revenues. In fact, Fiksu is a part of those plans, as we announced a new integration with Facebook this morning. (More details coming later today.) Mobile ads accounted for 23 percent of Facebook's revenue during the 2012 holiday season, and of its 680 million mobile monthly users, 157 million now interact with the service exclusively on mobile devices, reports Ad Age.

On Monday, Phil Schiller, Apple’s senior vice president of worldwide marketing, announced, “iOS 6 is the world’s most advanced mobile operating system, with nearly 300 million iPhone, iPad, and iPod touch devices on iOS 6 in just five months, it may be the most popular new version of an OS in history.” This is certainly motivation for mobile developers and marketers to take advantage of Apple’s latest innovations, reports Matthew Panzarino of The Next Web.

While Apple’s App Store grew by one-fifth from Q3 to Q4 in 2012, Google Play saw its revenue double, according to a recent report from App Annie. “Google Play owed this boost to Japan, the U.S. and South Korea, which respectively led the growth, and contributed nearly half of the store's app revenue in the fourth quarter of last year,” reported Anita Li in Mashable. The report also noted that the majority of app revenue from these countries came specifically from gaming apps.

For the first time ever, the iPhone was the most popular phone in the U.S. during the fourth quarter of 2012, reportsGigaOm’s Erica Ogg. The company sold 17.7 million smartphones during the quarter, just barely edging out Samsung, which sold 16.8 million phones, according to Strategy Analytics’ new Wireless Device Strategy report. In total, 52 million phones were sold in the U.S. between October and December 2012, and Apple and Samsung dominated the competition, selling two out of every three phones.

Image courtesy TechCrunch.