AT&T Explains Changes to Throttling Procedures
"Anyone hoping for some truly unlimited "unlimited" plans is still out of luck, but AT&T has announced some changes (or a clarification, as it puts it) to its throttling procedures today that will at least give you a bit more room to work with."
Basically, if you are on an unlimited plan with a 3G phone, you get full data up to 3GB, but then you get throttled down until the next billing cycle. If on a 4G, then you get 5GB to use before the throttling begins. This has no effect on the tiered data plans, only the unlimited ones.
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