Although AT&T was the first to convert to tiered data plans, those who were grandfathered into their existing unlimited data plans and fall into the heaviest users on their network will be subject to a reduction in data throughput. AT&T does say this will only be experienced by a small minority of smartphone customers.
More after the break
AT&T says they will warn customers several times before reducing their data speeds and data will be fully restored at the beginning of the customers next billing cycle. According to AT&T you can still send thousands of email messages, surf thousands of websites and watch hours of streaming video before reaching the top 5% level which will be subject to the data reduction.
They also want to remind AT&T customers that they have access to over 25,000 AT&T wireless hotspots free of charge and Wi-Fi doesn’t count against data usage. AT&T makes it a point to add that customers on unlimited plans that must have speed all the time can sign up for a tiered data plan where they won’t see a reduction in speed just an increase in cost.
Finally, AT&T takes the opportunity in this particular release to make one more plea
“But even as we pursue this additional measure, it will not solve our spectrum shortage and network capacity issues. Nothing short of completing the T-Mobile merger will provide additional spectrum capacity to address these near term challenges.”
Source: AT&T via Fierce