T-Mobile Flaunts Outstanding New Deal in the Face of AT&T

T-Mobile has announced a new promotion, marking yet another salvo fired in the ongoing price battle between the four major U.S. mobile carriers.

Starting on March 1, anyone– both new subscribers and existing T-Mobile customers– can get three lines on the unlimited One tier plan for $100, as opposed to the standard price of $140. The promotion essentially offers an extra line, in a 3 for the price of 2 deal. The savings will be doled out in the form of bill credits.

T-Mobile has noted that the offer is for a limited time only, though the third free line can be kept indefinitely so long as customers remain with the carrier and in good standing. The third line can be allocated for any purpose, whether it’s your smartwatch, tablet, or another smartphone.

The One plan offers unlimited data, with the caveat that customers who exceed approximately 28 gigabytes will be throttled. Comparable unlimited plans are being offered by competitors Sprint, Verizon, and AT&T, all of whom also cap their plans between 22 and 28 gigabytes.

The latter today announced two new plans. The Unlimited Plus plan on AT&T provides unlimited data on a single line for $90 a month, though the resolution on streaming video will be reined in to 480p. The second plan, Unlimited Choice, costs $60 per month on a single line. All customers on the cheaper Choice plan are limited to 3 megabits per second, however.