AT&T hadn't revealed how much data you'd have to consume to be in that top 5%, but subscribers assumed the limit was about 5 GB per month, says Deepa Karthikeyan, a telecom analyst at research firm Current Analysis.
says AT&T's latest move might be a tactic to encourage customers on unlimited plans to move to tier plans.
Knowing data would be throttled at 3 GB, some heavy data users might be compelled to upgrade to a 5 GB plan, for instance.
When throttled, users can still do e-mail and Web browsing, but they would find streaming of video and audio difficult, if not impossible, she
"There was general discontent among (unlimited data) customers.
If you called customer service reps, they were pushing you to tiered plans," Karthikeyan