A single line will cost $100 a month, with the second and third lines each costing an additional $40 per month. There is no new discount for subscribers who have unlimited plans that had been tagged to DirecTV or U-verse.

Starting Friday, AT&T will launch its new unlimited data plan. The carrier, of course, offered unlimited data way back when, but largely moved away from the model and switched to data allotments in 2010.

Prior to this week, Sprint and T-Mobile's basic unlimited plans offered unlimited data, but did not include 10GB of hotspot data.

The $80 unlimited plan - or, to phrase it more accurately, "unmetered" plan - that Verizon Wireless rolled out Sunday features fewer carve-outs and restrictions than comparable offerings from AT&T and Sprint, as well as one from T-Mobile, which has responded to Verizon by removing restrictions on hotspot use and video streaming.

- On Monday, Verizon released their new Unlimited service and when we put up an article about it, you had a lot to say!

"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.

As far as global communication goes, AT&T Unlimited offers unlimited calls from the United States to Canada and Mexico, as well as unlimited texting to 120 countries. T-Mobile was the first to respond, upgrading its video and hotspot specs to match Verizon's promise of HD video and 10 GB of high-speed hotspot data. Lines three through five will be free until March 31, 2018. So, if you have four lines on your plan, your bill will go from $90 a month to $160. Verizon's recent reintroduction of its unlimited data plan has set off a feeding frenzy of sorts among the big four cell phone service providers, all to your benefit.