T-Mobile revives Third Line on Us promotion

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T-Mobile has been regularly rolling out promotions that offer a third line free lately, and this week another one has gone live.

The 2019 Spring into Summer 3rd Line on Us promo is now available. This plan is similar to T-Mobile’s other recent third line free promos, offering a third voice line for free via monthly bill credits. Existing customers with one paid voice line on a qualified T-Mobile One plan can add a second line and get a third free, or new customers can add two T-Mobile One voice lines and get the third free.

Once you follow those steps, you’ll get a text message to tell you that you’ve qualified for the deal. Your monthly bill credits will begin within two bill cycles.

Customers who take advantage of this deal must keep the same number of lines that are on their account when the promo starts. If you cancel any line, you’ll lose your credit. After one year, you must keep two paid T-Mobile One voice lines and the lines activated during the promo to keep your credit.

Seeing this third line free promo pop up again may not be the most exciting thing ever, but because T-Mo keeps bringing it back, it means that customers who may have missed it previously because they weren’t with T-Mobile or didn’t have the right number of lines now have another chance at it. There’s no word on when this latest iteration of the deal might end, so if you’re interested, you may want to act soon.

Source: T-Mobile

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  • francob911 .

    Anybody knows if Simple Choice customers were able to get this deal or now?

    • tmo_repatl

      Customers must be on a qualifying plan at the time of activation or setup a future-dated plan change during the promo period. Plan changes initiated after the promo period won’t qualify customers.

    • pda96

      You’d have to switch to the One plan first.

    • Ronald Keen

      No, this plan is not available for Simple Choice customers, according to T-mobile.

    • JJ

      Nope, simple choice and select choice are no longer supported for basically everything that tmobile now gives. They want everyone on those plans to upgrade to new plans and pay more monthly. For me, it would be around $25 more a month to switch to these new plans.

      • Francisco Peña

        Many non unlimited SC folks got notices they will get upgraded to unlimited. I wasn’t in the first batch but 2 or 3 weeks ago I got the text.. So if all 3 lines on my account got upgraded, then I’m be staying..

  • Chuck Jones

    Too bad I can’t take advantage otherwise my free tablet line is gone.

  • Zisha Muller

    After 1 year of could I cancel a line and still get credit ?

    • “Customers who take advantage of this deal must keep the same number of lines that are on their account when the promo starts. If you cancel any line, you’ll lose your credit.

      After one year, you must keep two paid T-Mobile One voice lines and the lines activated during the promo to keep your credit.”

  • JG

    I assume the answer will be no… But…

    Would it be possible to use this third line SIM card in a tablet (or maybe watch) rather than a phone to give it unlimited data (and presumably calling & texting abilities) for free?

    • Mario Ostiguin

      Unfortunately, no.

    • Sharti24

      The answer is yes but speeds are throttled to 600 kbps if a phone sim is used in a tablet

  • Melvin

    It looks like I don’t qualify

    Some T-Mobile ONE plans like 2 lines for $100 plans, T-Mobile ONE Unlimited 55+ plans, T-Mobile ONE 9+ lines, T-Mobile ONE Amplified, T-Mobile ONE Military plans, and T-Mobile Essentials do not qualify for this deal.

    • dcmanryan

      Any plan with more than one T-Mobile One line does not qualify for existing customers. Worthless promo for most.

  • JJ

    I guess my lonely select choice plan is obsolete. Can’t add a 2nd line or 3rd line even if i want to pay for it. Oh well.

  • Philip

    Many years ago, they have the 3 lines and get 1 line free. So I end up with 2 phones. I like the 14GB hotspot. Dont know if they will bring this deal back again.