A new survey of recent iPhone customers found that 21 percent of iPhone 4S buyers chose Apple's highest capacity 64-gigabyte model, while 36 percent of users migrated from another platform like Android, BlackBerry or Palm.

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A new study on the use of mobile devices in corporate environments shows Apple's iOS overtaking RIM's BlackBerry in popularity, while third place Android is described as the "most risky" mobile platform in terms of security problems.

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The launch of the iPhone 4S last October had an "enormous impact" on the U.S. smartphone landscape, boosting Apple's share among new buyers by almost 20 percent and putting it neck-and-neck with Android in December.

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Four major smartphone makers are reportedly planning to reduce the number of new handsets they produce, in an attempt to capture the success Apple has had in releasing just one iPhone model each year.

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Apple was awarded a total of 676 patents by the U.S. Patent and Trademark Office in 2011, ranking it No. 39 among companies awarded inventions in the U.S.

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A new survey has found Apple has "explosive momentum" at the beginning of 2012, with more than half of people who plan to buy a smartphone in the next 90 days choosing Apple's iPhone.

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As Research in Motion is rumored to be planning for a major shakeup in its board of directors, the company has begun an odd sale in which all PlayBook models, regardless of capacity, are priced at $299.

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Apple's iPhone grew 1.4% in the U.S. mobile OEM and smartphone OS markets during the three months ending in November, but Google's Android platform continued to dominate and gained 3.1% in its march to acquire half of America's subscribership.

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Research in Motion reportedly turned down offers from Amazon and other potential buyers, and is opting to fix its own problems by leveraging upcoming BlackBerry handsets and existing services.

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The iPhone 4S accounted for nearly one out of every four smartphone sales in the UK during the lead up to the holiday season, retains top spot while handset makers compete for a piece of the region's exploding smartphone market.

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Research in Motion's struggles in the smartphone market have driven its stock price so low that the company is worth less than the estimated value of just Apple's App Store.

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Following Research in Motion's announcement that its forthcoming BlackBerry 10 mobile operating system has been delayed yet again, Wall Street watchers have begun to wonder if the company will be too late to the high-end smartphone market to recover.

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US smartphone penetration in the mobile market is up dramatically, more than doubling its share over the past two years, and Apple's iPhone 4 remains the most popular model.

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More than 40 percent of owners of smartphones on BlackBerry, Windows Phone and Android platforms prefer Apple's iPad to tablets from their current smartphone operating system makers, according to a recent survey.

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Research in Motion announced on Friday that its inability to sell PlayBook tablets to consumers has forced the company to take a $485 million charge.

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Extensive data logging software known as "Carrier IQ" has been discovered to be secretly running on many mobile phones, including a number of handsets powered by Google Android, prompting one U.S. senator to demand answers from the company.

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While smartphones sales continue to grow in the U.S., accounting for 56 percent of all cellphone sales in Q3, Apple remained the top individual device maker despite buyers holding out for October's iPhone 4S release.

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In a handful of newly filed patent infringement lawsuits, Apple is suing and also being sued by Graphics Properties Holdings, formerly known as Silicon Graphics Inc.

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Existing iPhone users' demand for a new device helped push Apple's U.K. market share to nearly 43% in October, beating Android-based handset sales in the region for the first time since late 2010.

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A new study finds that iPhone owners are the most loyal smartphone users, and cites customers' personal investments in Apple's ecosystem as driving an over 80% retention rate for the device.

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