Months after warning users, AT&T has now begun throttling data speeds for heavy users.
The new rule affects only users with unlimited plans, as everyone else is already on a tiered plan.
Without giving an exact figure, AT&T says top 5 percent users normally consumer "12 times as much traffic as the average customer." I take that to mean over 10GB, but it is unclear what figures AT&T uses. It is estimated Apple users consumer 800MB per month.
AT&T was recently rated dead last for carriers in the annual Consumer Reports satisfaction survey.












