Nokia and Samsung continue to dominate as global handset shipments rise 13 percent in the second quarter, though smartphone wars mean operating profits are volatile.

Ask Maggie is a weekly technology advice column tackling readers' questions about mobile and broadband products, services, and issues.

The "essential use" exemption means that only customers can legally perform jailbreaks. And it doesn't stop companies such as Apple from various work-arounds, argues Stanford Law Fellow Larry Downes.

Taiwan mobile phone maker announces series of new jobs and promotions in management staff as part of ongoing effort to drive future growth.

Through its the new Best Buy Connect service, the electronics retailer plans to offer customers a new 4G tier starting in 2011.

It reports earnings per share of 9 cents on revenue of $5.4 billion and offers a cheery outlook for current quarter, which will include sales of new Droid X.

Study shows Verizon smartphone customers using 25 percent more data per month than AT&T's iPhone customers, which are among the company's biggest data hogs.

A press conference set for Tuesday has bloggers and analysts buzzing about a potential new touch-screen phone to rival iPhone and Android smartphones.