AT&T is introducing new Mobile Share Advantage plans aimed at eliminating data overages.
(Richard Drew / AP)

AT&T will offer an unlimited data plan, matching No. 1 carrier Verizon's plan announced days ago.

Starting Feb. 17, the No. 2 carrier expands its unlimited data, talk and text for four lines for $180 after a fourth-line bill credit, plus fees and taxes, according to a news release. The plan will now be  available to all consumer and business wireless customers without bundling DirecTV or U-verse services, which previously were the only way to get unlimited data through the carrier.


One line is $100 plus taxes; each addition line is $40 with the fourth being free after a monthly bill crecit.

AT&T's new unlimited option, which guarantees 4G LTE data speeds up to 22 GB before customers are intermittently throttled due to network congestion, also includes calling and texting to Mexico and Canada and unlimited texting to 120 countries. The plan also includes Stream Saver which lets customers elect to view video at 480p to stretch data.

"We're offering unlimited entertainment on the nation's best data network where and when you want to enjoy more of what you love," said David Christopher, Chief Marketing Officer of the AT&T Entertainment Group, in the release.

Unlike Verizon's new plan, AT&T will not offer 10 GB of mobile hotspot, but will allow business customers to take advantage of corporate discounts, which Verizon doesn't allow.

Customers not interested in unlimited plans can opt instead for AT&T Mobile Share Advantage data plans, introduced in August.  The plans were designed to end monthly overage charges of $15 per 1 GB used. MSA plans cost about $31 a month for 3 GB of data to $135 for 30 GB. After 4G data allotments are used, speeds are slowed to 2G. Smartphone access fees are extra per device. Typically, four lines with 25 GB of shared data costs about $220 a month.

Connect with me: "Like" Doreen's Deals on Facebook; follow Doreen Christensen on Twitter, Facebook and GooglePlus; sign up for Deals text alerts and my Freebie Friday newsletter.