NEW YORK (AP) - If you are a heavy user of AT&T's wireless service, there may be some speed bumps ahead.
Under a new policy, AT&T has started cutting its heaviest users data speeds as part of an attempt to manage data usage on its network.
AT&T has some 17 million customers with "unlimited data" plans that can be subject to throttling, representing just under half of its smartphone users. It stopped signing up new customers for those plans in 2010, and warned last year that it would start slowing speeds for people who consume the most data.
Users report that if they call the company to ask or complain about the throttling, AT&T customer support representatives suggest they switch to the limited plan.
An AT&T spokesman says that as of last summer, the top 5 percent of data users were using 2 gigabytes of data per month. But he also said the company doesn't actually throttle all of the top 5 percent "unlimited" data users. Last month, the figure was only 0.5 percent, or about 200,000 people.
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