AT&T

Calling AT&T's billing system a rigged gas pump, the a court filing says that AT&T systematically overstates its users data transactions.

Mobile carriers risk an end of profit within four years amid increased smartphone usage, rising investment costs and falling revenue per unit of data, says a new study.

AT&T is set to unveil a new mobile hotspot application that lets smartphone customers tether multiple devices via Wi-Fi connection. The feature will first be available on February 13 to select smartphone customers, starting with the launch of HTC Inspire 4G, the company said.

Apple Inc. said its CDMA iPhone 4 will be available for pre-orders from Thursday at Apple stores and Verizon Wireless. Apple said orders will be fulfilled on a first come, first served basis due to strong demand.

Robert W. Baird said it have complied a brief recap of the initial fourth quarter big-cap wireless winners and losers. In the Smartphones division, the winners are Apple and HTC on strong results and guidance, while the losers are Nokia and Motorola Mobility.

UBS Securities downgraded shares of carrier AT&T Inc. to neutral from buy, citing expectations for lower earnings and free cash flow growth in 2011 and 2012.

In its fourth quarter earnings call, AT&T's CEO Randall Stephenson expressed doubt about the days ahead without the iPhone exclusivity that boosted subscriber growth.

Dow once again briefly surpassed 12,000 points as stocks rose slightly on strong earnings reports.

The companies that reported earnings before the markets open on Thursday are: AT&T, Procter & Gamble, Caterpillar, Altria, Bristol-Myers Squibb, Eli Lilly, Motorola Solutions, Colgate-Palmolive, Celgene and Lockheed Martin.

App Store touches 10 billion downloads even as Apple iPhone 5 changes base while iPad 2 mass production is set to start.

List of Microsoft Windows Phone 7 introduced in 2010 and coming out in 2011, a special look

Trapster, a site that warns iPhone, Blackberry and Android phone users of speed traps is now warning its 10 million or so users that their passwords and email addresses have been compromised.

Apple could increase the resolution of its next-generation iPad (iPad 2) in a move that would put Apple far ahead from the reach of its competitors.

Rumours began circulating yesterday that Apple's (AAPL) white Iphone 4 will finally start making its way to shelves form February 27th.

RBC Capital Markets has adjusted its 2011 estimates of carrier Verizon to account for the iPhone 4 launch in early February 2011.

The battle between Apples' iOS and Google's Android operating systems saw another development after being found that many of the Android users are still using older versions compared to Apple users.

In terms of unlimited data plans, Sprint is way ahead of other carriers. Presently, Sprint Everything Data plan, with free calls to any mobile phone with unlimited data comes to $79.99 for a month whereas Verizon Wireless offers unlimited at $119.98 and T-Mobile offers $99.99 a month. But AT&T doesn’t offer any unlimited data plan.

With the announcement that iPhone will be available to Verizon subscribers even as Apple ends its agreement with AT&T, the mobile landscape has taken a different look all together. This development is expected to affect the entire mobile marketplace.

Google's mobile operating system Android will continue to grow at more than twice the rate of its major smart phone competitors in 2011, according to a latest estimate from market research firm Canalys.

Not to be left behind in the fight for 4G space, AT&T has introduced three phones on its network from Motorola, HTC and Samsung at the recently concluded CES 2011 in Las Vegas, and made sure it has the arsenal to make up for the iPhone loss, courtesy, Apple launching an iPhone for Verizon.

Verizon, Sprint and T-Mobile have their own share of 4G smartphones ready for release. Verizon has announced its 4G smartphone HTC Thunderbolt, the successor of Droid Incredible and Motorola Droid Bionic 4G, while Sprint showcased their HTC EVO Shift and T-Mobile had their share with Motorola Cliq 2, the successor of the Cliq XT which was launched last year. Also AT&T will get HTC Inspire 4G and Motorola ATRIX 4G.