AT&T

AT&T has just announced a USB-based telephone charger that does not pull electricity from the wall when it's not charging a phone. I don't know about you, but my charger is plugged in 100% of the time. That charger pulls a tiny amount of energy from the wall 24 hours a day 365 days a year. Multipy that by 100 million chargers in America and there's probably at least one coal-fired power plant in America dedicated entirely to that wasted power.

Google's Nexus One may have gotten off to a rocky start with consumers, but the "superphone" is making fast inroads with wireless carriers. Google this week started selling a Nexus One that will run on AT&T's 3G network, and has also inked a deal with Sprint Nextel. Google previously struck deals with T-Mobile, Vodafone and Verizon Wireless.

Sprint hasn't announced pricing or the availability date, but the carrier is already priming the competitive pump with marketing messages that proclaim its network has twice the coverage of AT&T and 10 times the coverage of T-Mobile.

AT&T's lower-end feature phones are becoming smarter. On Monday, the carrier announced it will offer "smartphone-like experiences" on four of its new, less-expensive models.

The new phones, part of the company's Quick Messaging Devices lineup, will be among the first at AT&T to receive the new suite of consumer data services as the company tries to add value to its lower end by making its data services as valuable, or more so, than the phones themselves.

'Cutting-Edge Services'

Verizon Wireless hopes to debut its first 4G smartphone in the middle of next year, months earlier than planned, a company executive revealed Wednesday. The new handset will debut about three to six months after its Long-Term Evolution network launches, Verizon Wireless CTO Anthony Melone told The Wall Street Journal.

That timetable suggests Verizon sees 4G as a significant way to outpace its leading rival, AT&T.

Motorola is placing two new bets on the open-source Android operating system with the release of its Backflip and Devour smartphones. The uniquely designed Backflip began selling through AT&T Wireless late last week, and the Detour is now available from Verizon Wireless.

The 3G/Wi-Fi Backflip, at $99 after rebate and with a two-year contract, is gaining a lot of attention for its unique flip-out QWERTY keyboard, which AT&T has described as "an original reverse flip design."

Big Selling Point -- MOTOBLUR

As Apple gets ready to ship its Pads with AT&T as the exclusive U.S. 3G carrier, the wireless giant's CEO seems to be downplaying expectations by saying the tablet computer will be "largely a Wi-Fi-driven product."

The basic iPad with Wi-Fi will sell for $499, and consumers who want 3G connections will have to shell out an extra $130 and pay AT&T $30 per month for unlimited data, or $15 a month for a 250MB plan. They'll also have to wait an extra month for 3G-capable tablets.

No Strain on Network

Having the latest and greatest Windows phones will no longer matter once Microsoft releases its Windows Phone 7 Series. Mobile-phone users running the latest Windows Mobile 6.5 operating system, made available in October, will have incremental upgrades but will need a new phone if they want to use the software giant's Windows Phone 7 mobile operating system.

Mobile-phone users with the latest Windows Mobile phones do not have the hardware needed to run the newest mobile operating system, according to Microsoft's Mobile Communication Business.

Hewlett-Packard unveiled its latest convertible tablet PC on Monday in what some are predicting will be a banner year for that class of devices. Geared toward small to midsize business owners, the EliteBook 2740p, which sells for $1,599, has multi-touch capabilities, runs Windows 7, and features Intel Core i7 or i5 processors, making it far faster than its predecessors.

Quick Thinker

The i7 processor runs at 2.66 GHz, while the i5 runs at 2.53 GHz. An alternative i5-520M runs at 2.40 GHz. The installed memory is 2GB or 4GB, but can be upgraded to 8GB.

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.