While AT&T has limited its throttling for unlimited 3G data to clogged-up networks, it hasn't been so kind to the LTE crowd. Go past 5GB of usage in a month and your high-speed connection would always slow down, no matter how empty the cell towers might be. The carrier is finally taking a softer stance, however. It recently updated its policy statements to say that it now throttles unlimited LTE data past the 5GB mark only if you're on a congested network. AT&T tells us that it had revealed plans to do this last year -- it just flicked the switch on the policy this week.