⭐ T-Mobile: New Offer! Customers Can Add A New Line with Unlimited Talk/Text/Data for Free + Potentially Get a Samsung Galaxy S20 for Free!

Update 03/17/21: New Offer: T-Mobile is running a new promotion which will give T-Mobile customers who have at least 2 paid lines on their account, a new line with unlimited talk, text and data for free! You can take advantage of this offer even if you have taken advantage of a similar offer in the past!

Dial 611 from your T-Mobile phone to contact them about this freebie.

Furthermore, ask your T-Mobile Representative about any other offers you qualify for – some people will also qualify for a Free Samsung Galaxy S20 phone – just have to pay sales tax!

There’s no expiration date for these offers so it can expire at anytime so don’t delay


Update 12/22/2020: Expired

New Offer: T-Mobile is running a new promotion called  “2020 Line on us 4” which will give T-Mobile customers who have at least 2 paid lines on their account, a new line with unlimited talk, text and data for free!

Simply call T-Mobile (Dial 611 from your T-Mobile phone) and tell them you want to take advantage of the “2020 Line on us 4” offer.

You can get another new line even if you got one from the November 26 deal we posted a few weeks ago.


Originally posted Nov 26

T-Mobile is currently running a promotion called the “2020 Line On Us 3” where any account with at least 2 paid phone lines can add another line for free!

Simply call T-Mobile (Dialing 611 from your T-Mobile phone) and tell them you’d like to take advantage of this offer. If your representative isn’t familiar with this offer, tell them to look up the “2020 Line On Us 3” offer.

There’s no expiration date on this offer but we were told it’ll at least be in effect thru tomorrow.

Let us know your experience adding a free new line in the comments below!

37 Comments

  1. They immediately knew what I was talking about. Added a free line to my account and they’re letting me wait before I actually use the line though they will give it a new phone number now.

    Thanks TJB!

  2. Throught December 3rd you can add it in costco and get a $200 costco shop card included in this offer.

    • Do you know if the $200 Costco offer was also extended through Dec 3 and not just the line on us offer? I activated on the 2nd of Dec and thought the entire process was automatic. But now I see I had to submit my information with a promo code and control number. Tried calling Costco and they said that there were no shop card promos running at that time for T-mobile.

  3. There’s also a T-Mobile promo of getting $100 when you port in a new number from a different phone provider. Not sure if this is stackable with this offer but could be something you should ask the phone representative

  4. called them – seems like this promotion doesn’t apply for Magenta Amplified plan, they suggested me to downgrade to the Magenta plan (and then lose some of the benefits such as 4G hotspot, etc), which i obviously refused.
    The rep told me he is going to escalate on my behalf… 🙁

  5. Been on the phone for half an hour already with multiple reps.. they are very confused that I already have a free line promo line on my account and that I’m trying to add another free line under a different promotion… now telling me one promo per account…

  6. My Rep had not idea about this promotion so i asked to speak with a manager who confirmed this offer. He said it literally just went into effect today so many Reps might not be familiar with it yet.
    Thx TJB for another free line

  7. Promo just became active a few hours ago. Might be best to wait a day before doing this as the Reps are only learning about this now.

    😂 This site gets info before T-Mobile Reps

  8. Just got it! There’s a one time 9.99 charge for a new Sim card but I said I’ll get it on my own from ebay for a few dollars

    • do you know the exact name of the promotion to get the free phone? when i called they said its a buy one get one deal.

  9. I was eligible for a new phone also. They will give me bill credits over 24 months making it free. The catch is if I cancel my line within 24 months, then I lose the credits. Its their way of preventing people of getting a new phone and just selling it but its to work around that anyways

  10. I called in and the representative had no clue what I was talking about. I hung up and tried for a different rep and they gave me the free line

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