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AT&T had 4.3 million iPhone activations in the first quarter of 2012, down 43% from the prior quarter. Of the most valuable subscribers who signed up for 2 years AT&T showed 187,000 additions. All but 7000 of these were in tablets. . This indicates that the smartphone market in the U.S. is being saturated. AT&T used the iPhone introduction in 2007 as a way to take subscribers from Verizon and Sprint. That advantage is now fading.

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Microsoft will make a $300 million investment in Barnes & Noble's Nook digital book and college text unit. Microsoft will get a 17.6% stake in a new subsidiary for thsi business that values it at $1.7 billion. A Nook app will be included for Windows 8. The investment is useful for Barnes & Noble as it had to invest aggressively in its digital book business, leading to a loss before interest, taxes and depreciation of $94 million for fiscal third quarter.

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Apple's effort to reverse a loss of market share to Android smartphones at the lower end of the price range.

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Nokia is initiating a search for a new CEO to replace Mr Kallasvuo who became CEO in 2006. Since then Apple's iPhone has changed the market and Nokia has not been able to match the trend set by iPhones in the mobile phone device market. Nokia's stock has fallen 42% since April 19, 2010. Nokia's response to the iPhone was to replace its mobile phone executive and to create a separate operation for smartphones. Nokia plans to have a new line of smartphones in 2010 to compete with the iPhone. The main problem is its operating system software which needs to be more sophisticated. Nokia holds about 40% of the cell phone market with Europe and countries like India being its strong points. But Nokia's margins in India are low because of intense competition. Apple has already surpassed Nokia in the profit in phones, making $1.6 billion in profit in the third quarter of 2009 compared to Nokia's $1.1 billion.

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E-book sales reached 20% of total U.S. book sales in 2011- a total of $970 million. Book sales in paper copies were a bit lower than $5 billion in 2011, close to where they were in 2011, showing that book sales have not fallen as e-book sales have increased. This is based on figures from the monthly industry reports of the Association of American Publishers. The Justice Department's antitrust lawsuit against Apple and five publishers for price collusion is having a serious impact on Barnes & Noble, as Barnes & Noble's made a profit of about 30% or $3.90 under the pricing model Apple helped establish, where the e book title sold for $12.99. In a lower pricing arrangement Amazon establishes Barnes & Noble's profits would decline substantially or even lead to a loss. Barnes & Noble's stock lost 17% in April, 2012.

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Comparison of cost of components and margins for Nokia's Lumia smartphone and the Apple iPhone 4S in 2012. The Lumia 900 retail price is $450 vs. Apple iPhone 4S for $649. Total component cost for Lumia $209 vs. $190 for Apple. Margin of $241 for Lumia vs. $459 for Apple.

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Sales have declined and share price dropped by 40% since J.C. Penney's new CEO, Ron Johnson, tried to bring strategies that worked with Apple to the U.S. department store.

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IDC and Gartner reports show PC shipments in the third quarter 2012 declined by 8% from the prior year. This creates an uncertain outlook for sales of PC's powered by Windows 8 operating system enabling touchscreen technology.