Sprint revealed today that it will launch its next-generation Direct Connect push-to-talk service, along with …

In advance of its anticipated “Mango” software update, Microsoft is throwing open the doors to its newly renovated online Windows Phone Marketplace. Related stories • A look at Windows Phone 7 Marketplace for Mango • Microsoft to app developers: Submit Mango apps to Marketplace now • Windows Phone Marketplace hits 30,000 apps The initial Marketplace was little more than a …

Sprint Nextel CEO Dan Hesse speaking at an emerging-technology conference last year. Marguerite Reardon/CNET Sprint Nextel will launch its own 4G LTE network early next year. The company is already installing LTE equipment and has been field testing the network in select areas, according to people familiar with the situation. It hopes to launch commercial service by the end of …