If Sony’s 5-inch Xperia Z smart phone didn’t push your thumbs to their physical limit, then wrap your mitts around the monstrous Xperia Z Ultra. It packs a gargantuan 6.44-inch display and the same waterproof design as the regular Xperia Z. The Xperia Z Ultra looks very much like the standard Xperia Z, except it’s …

After wiping his hands clean of Research In Motion, former co-CEO Jim Balsillie will now lead Sustainable Development Technology Canada, a federal agency that promotes green tech, The Canadian Press reported Tuesday. Balsillie left Canadian-based RIM, the maker of BlackBerry, in March 2012 amid shareholder criticism over the company’s poor performance in recent years. Co-CEO Mike Lazaridis also stepped down, …

Score one for Samsung in the company’s long-running patent battles with Apple. Related stories: Apple loses Samsung infringement lawsuit in Japan Apple appeals loss against Samsung in Japan Apple scores patent win against Samsung in Japan A Japanese high court upheld a lower court ruling that Samsung did not infringe on an Apple patent related to synchronizing music and video …

Verizon Wireless subscribers interested in the Galaxy S4 Developer Edition can now order one directly through Samsung. Selling for $650, the unlocked developer edition offers all the features of the standard S4. But as per its name, it’s geared toward developers and other people who want to tweak the phone without running into the obstacles posed by the locked version. …

Updated June 25, 2013, with three new cases (Ballistic, Cascade Designs, and Lifeproof). Waterproof smartphone cases used to be bulky, ungainly contraptions, but they’ve been trimming down lately. That said, building a truly waterproof case is not easy (a waterproof case is defined as one that can be fully submerged underwater for at least 30 minutes). Often there are trade-offs …

South Korea is about to get a taste of what true 4G mobile broadband speed is. SK Telecom announced Wednesday that it has launched the world’s first LTE-Advanced network, a faster LTE standard that was originally deemed by the International Telecommunication Union as a true 4G standard. LTE-Advanced is capable of data transfer rates of 150Mbps, roughly twice as fast …

Glastonbury has a new headliner: 4G. The Rolling Stones, Arctic Monkeys and Mumford and Sons will share the country airwaves with EE’s super-fast Internet connection, pumping out free Wi-Fi from the back of a tractor. Britain’s first 4G network is providing Wi-Fi to revellers at Glastonbury Festival this weekend, outfitting one of Worthy Farm’s eco-friendly biodiesel-fuelled New Holland tractors into …

You can now try iOS 7 on your iPad. The preview version of the next generation of Apple software is now available for tablets as well as the iPhone and iPod touch. The preview software is available to app developers and anyone willing to register with Apple as a developer. The Music and Photo Booth apps are different, but apart …

The fight for ownership of Sprint Nextel is drawing to a close, as Sprint shareholders overwhelmingly voted to approve an offer from Japan’s SoftBank to buy the company. Approximately 98 percent of the votes cast on Tuesday supported SoftBank’s offer. The deal must still be approved by the Federal Communications Commission. But Softbank said it believes the deal should close …

Sarah Tew/CNET Recently, CNET started measuring input lag. This is the amount of time it takes for a TV or projector to produce an image. In the worse case, excessive input lag can cause lip sync issues. In most cases, it can lead to worse performance with certain games. Since the article hit, there’s been a surge of people ridiculing …