After that time, the plan reverts to the original plan cost of $60 for the first line (an additional $10), the second remains $40, and the third through fifth lines will all cost you $30 per line.
The plan doesn't include hotspot data. It's unclear how exactly this will affect those customers, but we'll be sure to provide an update as soon as details are made available.
Also, following recent criticism of "unlimited" plans that throttle users after a certain number of gigabytes, AT&T says it will reduce speeds for those who use 22 GB of data.
AT&T previously offered an unlimited data plan, but it was limited to customers who were also DirecTV or U-Verse customers.
Following Verizon's decision to introduce an unlimited plan once again and T-Mobile upping its plan in response, Sprint has now chose to throw its hat in the ring as well. While tethering after this point is still unlimited, it falls back to Verizon's 3G network, which tends to average speeds of about 850 kbps.
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The single-line price is higher than AT&T's competitors are charging, and the plan has some limits despite its name.
Basically, this new promotion rolls this $20 premium charge into the base price, meaning that while you will get unlimited HD streaming, music streams are capped at up to 1.5Mbps, and gaming streams at up to 8Mbps (neither of which should impact those relatively-resource light applications, but is worth making clear all the same). Last year, T-Mobile added 8.2 million total customers, 3.3 million of which are postpaid phone connections.
"We're offering unlimited entertainment on the nation's best data network where and when you want to enjoy more of what you love", AT&T Entertainment Group CMO David Christopher commented. That said, T-Mobile has improved by leaps and bounds in the last few years and between their phone selection and what I pay for my four lines as a business account, I don't see myself leaving them until all my children are paying for their own lines.
Verizon's plan is now available.