Infographic: Making sense of the spectrum debate

We’ve filled up a lot of posts at GigaOM discussing spectrum and the supposed capacity crunch carriers face, but all those references to megahertz and gigahertz can get somewhat confusing. Luckily RootMetrics has prepared a handy graphical primer explaining the ins and out of the airwaves.

Virgin Mobile to slow heavy smartphone data users

Virgin Mobile will begin to reduce the mobile broadband speeds of smartphone users on March 23, following a similar path as T-Mobile, AT&T and others who have offered unlimited plans. Facing huge demand for mobile data, the days of truly unlimited plans appear numbered.

Verizon to buy Cox spectrum to remake its broadband model

Verizon Wireless has agreed to purchase some of Cox Communications’ wireless spectrum for $315 million. With this deal, and an earlier spectrum deal, Verizon looks like it will focus on its wireless biz and use its wireline fiber business to support enterprises and cell towers.

With 38 frequency flavors, LTE won’t unify 4G

Next-generation LTE mobile broadband networks won’t unify global communications anytime soon, if ever. A new Wireless Intelligence report published Friday estimates more than 200 LTE networks will have launched around the world by 2015. That’s great news, but they’ll use 38 different frequencies. Fragmentation, anyone?

US DOJ files suit to block AT&T, T-Mobile merger

The U.S. government filed suit to block AT&T’s $39 billion merger with T-Mobile, claiming the deal would “create an anti-competitive environment.” If the merger falls through, AT&T will lose cash, spectrum holdings and the ability to add T-Mobile’s unique 1700 MHz frequency LTE network expansion plans.