AT&T Inc.

Last year, Palm thought it had all the pieces for a turnaround in the market it pioneered: A new CEO known for making the iPod a household name, a sleek new smart phone called the Pre and fresh, intuitive operating software.

Instead, the company is in danger of going the way of its 1990s Palm Pilot, making it the latest innovator to learn that great technology and an accomplished leader don't guarantee success.

Bill Warren founded an early online job board in the 1990s, helped kick-start an industry and was president of Monster.com, one of the leading Internet career sites. But these days he's not very happy with the results.

So he's taking another crack at it, going after Monster, Career Builder and similar commercial job sites. Warren is starting a nonprofit job listing system that could lower the costs that employers pay to list positions and make the process easier and more fruitful for applicants.

T-Mobile USA, the fourth-largest U.S. wireless carrier, said Thursday it gained 371,000 new customers in the fourth quarter, reversing subscriber losses in the third quarter.

But the new subscribers were mainly low-paying ones who don't sign contracts, and T-Mobile USA's earnings and revenue fell from the same period a year earlier.

Sony Ericsson, a big but struggling maker of phones internationally, wants to be more than a bit player in the U.S. It plans to get there by giving U.S. consumers what they want: phones similar to the iPhone.

The strategy is much like the comeback recipe of U.S.-based Motorola Inc., which has hit on hard times since its Razr phone fell from popularity. It's revamping itself as a maker of smart phones running Google Inc.'s Android software.

The world's largest wireless carriers, including the four largest in the U.S., announced Monday that they are combining forces to make it easier for software developers to write applications that will run on as many phones as possible.

The "Wholesale Applications Community" is an attempt to retake the initiative from phone makers like Apple Inc., Nokia Corp. and Research in Motion Ltd., which have applications stores of their own. Google Inc. is also building a significant store for its Android software.

The prospect of watching live, local TV shows on mobile phones and other portable devices is getting closer. Manufacturers this week are showing off gadgets can receive a new type of digital TV transmissions.

"Mobile DTV" gadgets will be available this spring for consumers in the Washington, D.C., area to try. The devices include a cell phone made by Samsung Electronics Co. and a Dell Inc. laptop. There's also the Tivit, a device about the size of a deck of cards that receives a TV signal, then rebroadcasts it over Wi-Fi so it can be received by an iPhone or BlackBerry.

The prospect of watching live, local TV shows on mobile phones and other portable devices is getting closer. Manufacturers this week are showing off gadgets that can receive a new type of digital TV transmissions.

"Mobile DTV" gadgets will be available this spring for consumers in the Washington, D.C., area to try. The devices include a cell phone made by Samsung Electronics Co. and a Dell Inc. laptop. There's also the Tivit, a device about the size of a deck of cards that receives a TV signal, then rebroadcasts it over Wi-Fi so it can be received by an iPhone or BlackBerry.

What would the holidays be without bickering between siblings? AT&T and Verizon are swamping TV with ads attacking facets of each other's wireless networks. While the ads stick fairly close to the truth, there's a lot they don't say.

AT&T Inc. has been running ads with actor Luke Wilson checking off points in AT&T's favor over Verizon Wireless. It's the continuation of a spat that started a month ago, when Verizon started airing cheeky commercials that highlighted how its fast, third-generation ("3G") network has wider coverage than AT&T's 3G system.

Cell phone handset maker Sony Ericsson will move its North American headquarters from North Carolina to Atlanta and close a half-dozen sites worldwide as it retrenches against what it expects will be a tighter market and cuts about 1,600 jobs globally.

The joint venture between Sweden's LM Ericsson and Japan's Sony Corp. will consolidate product development operations by closing sites in Research Triangle Park; Seattle; Miami; San Diego; Kista, Sweden; and Chennai, India, spokeswoman Stacy Doster said.

Navigational device maker Garmin Ltd. reported a 24 percent increase in third-quarter profit as lower costs offset a drop in sales.

The results beat Wall Street estimates but did little to calm investors' concerns that consumers are more likely to turn to cell phones equipped with increasingly sophisticated navigational features of their own.

Shares plunged $3.66, or 11.7 percent, to $27.75 in afternoon trading.