With Google's free navigation on the Motorola Droid, available Friday, cell phones are expanding at the expense of navigation devices such as Garmin and TomTom.

If you're planning on committing a crime, cheating on your spouse or lying to your employer about where you’ve been, it may be a good idea to leave your cell phone at home.

Verizon Wireless said Thursday that it would sell an HTC Corp phone based on Google Android system for $99.99, potentially putting pressure on smaller carrier Sprint Nextel.

AT&T is suing Verizon Wireless in an effort to stop its bigger mobile rival from using "misleading" coverage maps in ads that AT&T says are causing it to lose "incalculable market share."

Sprint Nextel reported a wider quarterly loss and a 9 percent revenue decline, but its success in slowing the loss of the most valuable wireless subscribers took some of the sting out of the results.

Motorola forecast a higher-than-expected profit for the current quarter, when it will start selling two new Google Android phones in hopes of regaining ground lost to iPhone.

Verizon Communications on Monday posted a third quarter profit that fell more than 9 percent but was slightly ahead of analyst estimates and it added more wireless customers than expected.

Wall Street knew Apple results for the most recent quarter would blow past the company's conservative guidance, but investors clearly weren't prepared for the 47 percent jump in profit that Apple delivered.

Apple shares hit an all-time high late Monday as the company reported quarterly profit and sales that rose from last year and blew past analysts' forecasts.

Google handily beat analysts' expectations for both profit and revenue on Thursday, sending its shares up in after-hours trading.

The world's top cellphone maker Nokia shocked investors by taking a major writedown at its struggling networks unit and revealing a fall in its smartphone sales from the previous quarter.

Users of Microsoft Sidekick mobile phone may have permanently lost data such as contacts, photos and calendar entries due to the failure of a Microsoft server computer.

Verizon Wireless and Google say they are teaming up to speed development of new mobile devices based on Google's  Android software that will run on Verizon's cell phone network.

Research in Motion reported a profit that rose over last year and topped expectations, but sales fell short of forecasts and the Blackberry maker's shares plunged in late trading.

Initially rolled out by Microsoft in 2006, the Zune was positioned as a wannabe iPod killer – and was promptly squashed by Apple’s popular system. Now the Zune HD, a redesigned, flashier version of the system, is hitting retail shelves.