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Jman100 968K Views
Dec 19, 2020 7:55 PM

Select T-Mobile Accounts w/ Qualifying 2+ Line Plans: Get A New Line

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Deal Details
T-Mobile.com offers Existing T-Mobile Customers on Eligible Plans with 2 Lines or More to add a New Line for Free.

Thanks to community member Jman100 for finding this deal.

What Do I Need To Do To Get This Offer?
  • This is a targeted offer from T-Mobile and is only open to select existing customers that meet the following requirement:
    • You must have a qualifying T-Mobile postpaid plan with 2 or more lines that falls under one of the following SOC Codes shown in this image (see instructions below on how to find your SOC code).
      • SOC (Service Order Code): The technical term used to describe plans and services that are added to customers' accounts within T-Mobile's billing systems.
    • If you are certain you qualify, login to your account below and:
    • Alternatively, you may call T-Mobile and a representative can assist you with adding your 3rd line.
      • If calling, promotion name is "2020 Line On Us 4".
Instructions to find your SOC code (thanks to Reddit user massiveprodigy):
  1. Using the Google Chrome web browser (desktop version), open the Developer tools panel on the right (Ctrl+Shift+I)
  2. Click on Network tab
  3. Click on XHR tab
  4. Log in my.t-Mobile.com and click Account at the top.
  5. In developer tools panel, choose manageaccount from the list on the left
  6. Account level promos will appear under accountDiscounts
  7. Line level features will appear under lines > # > addOns
  8. If there is a pending change, you can see exactly what it is by clicking productsPendingChange
  9. Rate plan appears under ratePlans
Can This Be Combined With Other Offers?
  • This deal CANNOT be combined with any of the following current T-Mobile promotional offers:
    • iPhone 12 "on us" (2020 Apple Trade Activate P3)
    • BOGO iPhone (2020 Apple Buy 2 P11)
    • Free Galaxy A71 5G with new line (2020 Samsung Activate P12)
    • Free OnePlus 8/8T+ 5G with new line (2020 OnePlus Activate P5)
    • Costco BYOD promos
    • TFB-exclusive promos
  • By participating in any of these offers above while using your new free line, you will forfeit the free line terms and will have to pay for that line.

Editor's Notes

Written by StrawMan86 | Staff
Please refer to the forum thread for additional details and discussion. -StrawMan86

Original Post

Written by Jman100
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
T-Mobile.com offers Existing T-Mobile Customers on Eligible Plans with 2 Lines or More to add a New Line for Free.

Thanks to community member Jman100 for finding this deal.

What Do I Need To Do To Get This Offer?
  • This is a targeted offer from T-Mobile and is only open to select existing customers that meet the following requirement:
    • You must have a qualifying T-Mobile postpaid plan with 2 or more lines that falls under one of the following SOC Codes shown in this image (see instructions below on how to find your SOC code).
      • SOC (Service Order Code): The technical term used to describe plans and services that are added to customers' accounts within T-Mobile's billing systems.
    • If you are certain you qualify, login to your account below and:
    • Alternatively, you may call T-Mobile and a representative can assist you with adding your 3rd line.
      • If calling, promotion name is "2020 Line On Us 4".
Instructions to find your SOC code (thanks to Reddit user massiveprodigy):
  1. Using the Google Chrome web browser (desktop version), open the Developer tools panel on the right (Ctrl+Shift+I)
  2. Click on Network tab
  3. Click on XHR tab
  4. Log in my.t-Mobile.com and click Account at the top.
  5. In developer tools panel, choose manageaccount from the list on the left
  6. Account level promos will appear under accountDiscounts
  7. Line level features will appear under lines > # > addOns
  8. If there is a pending change, you can see exactly what it is by clicking productsPendingChange
  9. Rate plan appears under ratePlans
Can This Be Combined With Other Offers?
  • This deal CANNOT be combined with any of the following current T-Mobile promotional offers:
    • iPhone 12 "on us" (2020 Apple Trade Activate P3)
    • BOGO iPhone (2020 Apple Buy 2 P11)
    • Free Galaxy A71 5G with new line (2020 Samsung Activate P12)
    • Free OnePlus 8/8T+ 5G with new line (2020 OnePlus Activate P5)
    • Costco BYOD promos
    • TFB-exclusive promos
  • By participating in any of these offers above while using your new free line, you will forfeit the free line terms and will have to pay for that line.

Editor's Notes

Written by StrawMan86 | Staff
Please refer to the forum thread for additional details and discussion. -StrawMan86

Original Post

Written by Jman100

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4.2K Comments

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Dec 25, 2020 9:47 PM
5 Comments
Joined Aug 2017

This comment has been rated as unhelpful by Slickdeals users.

Dec 25, 2020 9:56 PM
4.5K Comments
Joined Dec 2008
GulllyBoYDec 25, 2020 9:56 PM
4.5K Comments
Quote from aqamar5 View quoted comment :
That's what you get for being greedy. Everyone that added this 4th line (after adding the free line in November) will get the same Christmas present. Knowing you can only have the promo once you should not have added the extra line in December.
Did they say anywhere? Did OP mentioned? This was just regular year ending free line from T mobile to boost their numbers up before the year end.
From OP :
The promo is called "2020 Line On Us 4"
It is fully stackable with "2020 Line On Us 3"
Internal docs mention a scenario where it isn't stackable. It is referring to "third line free" promos and only to accounts opened on the
20th or later. This appears to be causing confusion.
The promo seems to be showing on accounts as line on us 3 (double if you already had it). It's a known issue and being worked on. Will
not affect eligibility.
Dec 25, 2020 10:05 PM
11K Comments
Joined Jul 2006
xtrabadDec 25, 2020 10:05 PM
11K Comments
Quote from aqamar5 View quoted comment :
That's what you get for being greedy. Everyone that added this 4th line (after adding the free line in November) will get the same Christmas present. Knowing you can only have the promo once you should not have added the extra line in December.
ok Scrooge, no need to be snarky on Christmas. It is not about greed, and nobody here needs a lecture. Most people did the deal in good faith and had little reason to believe problems would arise in light of past deals where adding a free line was mostly achieved without any issues. Step off you soapbox, relax, and enjoy the holiday.
Dec 25, 2020 10:12 PM
22 Comments
Joined Jul 2017
kratesh_1Dec 25, 2020 10:12 PM
22 Comments
Quote from pgrogan View quoted comment :
Added a line at Costco yesterday with a device I already owned. Was not intending to submit the $100 BYOD rebate as I did not want to jeopardize the status of the free line. I got a text message later in the day "Congrats! You will receive your promotional service discount from T-Mobile as long as your maintain eligibility."

Next day (today) I got another text thanking me for adding a line.

When I check my current plan, I can see that my bill has increased by $16 per month?

Does getting the line added at Costco and not submitting for the BYOD rebate invalidate me?

Will need to try and hash this out with Customer Care I suppose.
I'm in a similar situation, went to Costco (before OP mentioned about non-stacking Costco offer). The amount for the new line shows 0 and also have received the text for promotion. I do not plan on submitting the rebate for Costco cash card, but would I still qualify for the free line promotion?
Dec 25, 2020 10:19 PM
458 Comments
Joined Jan 2007
Sofa.KingDec 25, 2020 10:19 PM
458 Comments
Quote from Kogunti96 View quoted comment :
Is this free line on us by T-Mobile over?
Nope. I just added one today via in app chat.
Dec 25, 2020 10:33 PM
1.1K Comments
Joined Feb 2011
mrsdealcheckerDec 25, 2020 10:33 PM
1.1K Comments
I just added the free line. How do I find out which promotion was applied? The line on us 3 or the line on us 4?
Also if one was applied.. can I some how apply the other one too to get another? Looking to get 2 free lines for my kids..
Dec 25, 2020 10:56 PM
487 Comments
Joined Nov 2009
Blitz64Dec 25, 2020 10:56 PM
487 Comments
Quote from mrsdealchecker View quoted comment :
I just added the free line. How do I find out which promotion was applied? The line on us 3 or the line on us 4?
Also if one was applied.. can I some how apply the other one too to get another? Looking to get 2 free lines for my kids..
Go to your tmobile account page.

https://my.t-mobile.com/account/plan-details

Then you should see something like this:
Applied discounts and promotions:
$10 AutoPay Discount
$10 AutoPay Discount (Additional Lines)
$20 2020 Line On Us 3 (Additional Lines)


No, you can only get 1 free line this week. Wait for another promotion in 2021 to get another line.

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Dec 25, 2020 10:58 PM
810 Comments
Joined Jul 2008
rampenDec 25, 2020 10:58 PM
810 Comments
Quote from mrsdealchecker View quoted comment :
I just added the free line. How do I find out which promotion was applied? The line on us 3 or the line on us 4?
Also if one was applied.. can I some how apply the other one too to get another? Looking to get 2 free lines for my kids..
As of now everyone is seeing it as line on us 3. U can only get one now. Hopefully they will do another one soon....so that u can get one for ur other kid too
Dec 25, 2020 11:06 PM
1K Comments
Joined Jan 2009
isbn1975Dec 25, 2020 11:06 PM
1K Comments
Question. I have added a free line last month, but I'm thinking if I can change my plan (currently SC, but want to upgrade to Magenta,) with this promo.

Problem is, I currently have five lines, but will only need three (2 paid + 1 free) lines, meaning I will be canceling the one that I just opened last month. I believe you are not eligible for a free line promo if you've canceled any lines within the last 2-3 months. Am I correct on this?
Dec 25, 2020 11:12 PM
466 Comments
Joined Aug 2020
FiveGeeA71Dec 25, 2020 11:12 PM
466 Comments
Quote from aqamar5 View quoted comment :
That's what you get for being greedy. Everyone that added this 4th line (after adding the free line in November) will get the same Christmas present. Knowing you can only have the promo once you should not have added the extra line in December.
i only follow what JMan100 words are, so I'm in good shape
Dec 25, 2020 11:13 PM
487 Comments
Joined Nov 2009
Blitz64Dec 25, 2020 11:13 PM
487 Comments
Quote from isbn1975 View quoted comment :
Question. I have added a free line last month, but I'm thinking if I can change my plan (currently SC, but want to upgrade to Magenta,) with this promo.

Problem is, I currently have five lines, but will only need three (2 paid + 1 free) lines, meaning I will be canceling the one that I just opened last month. I believe you are not eligible for a free line promo if you've canceled any lines within the last 2-3 months. Am I correct on this?

Correct, you can't cancel any lines for 1 year.
Last edited by Blitz64 December 25, 2020 at 03:20 PM.
Dec 25, 2020 11:17 PM
458 Comments
Joined Jan 2007
Sofa.KingDec 25, 2020 11:17 PM
458 Comments
Quote from Blitz64 View quoted comment :
Correct, you can cancel any lines for 1 year.
So how would this work? Four paid lines. Got free lines in September, November and December. So now a total of seven lines.

Can I port out a paid line in September 2021 to GV and bring it back the next day? Since at that time, I only had four lines plus the September fifth free line.

Is there a minimum time period for a line to be away from TMobile before being ported back? This is not for a promo where it's typically 3 months. Just prefer to keep the phone number.

Or does it have to be December 2021 when I can port out a paid line?
Last edited by An0nym0us8 December 25, 2020 at 03:30 PM.
Dec 25, 2020 11:23 PM
487 Comments
Joined Nov 2009
Blitz64Dec 25, 2020 11:23 PM
487 Comments
Quote from An0nym0us8 View quoted comment :
So how would this work? Four paid lines. Got free lines in September, November and December.

Can I port out a paid line in September 2021 to GV and bring it back the next day?

Or does it have to be December 2021 when I can port out a paid line?
It will be December 2021 before you can port out any lines. Just to be safe, wait till January 2022. Then port the paid line to google voice for 3 months in January 2022.

Then April 2022, port from google voice back into tmobile free line.
Dec 25, 2020 11:26 PM
283 Comments
Joined Jul 2006
zyfyDec 25, 2020 11:26 PM
283 Comments
Quote from isbn1975 View quoted comment :
Question. I have added a free line last month, but I'm thinking if I can change my plan (currently SC, but want to upgrade to Magenta,) with this promo.

Problem is, I currently have five lines, but will only need three (2 paid + 1 free) lines, meaning I will be canceling the one that I just opened last month. I believe you are not eligible for a free line promo if you've canceled any lines within the last 2-3 months. Am I correct on this?
Why cancel lines? Magenta is tax included plan, which means the same price for 3 or 5 or whatever lines allowed, right? Or Tmobile won't allow you to bring the free lines to Magenta?

OK, I guess your currently paid lines are more than 2.
Last edited by zyfy December 25, 2020 at 03:30 PM.

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Dec 25, 2020 11:49 PM
4.7K Comments
Joined Dec 2010
needgeechDec 25, 2020 11:49 PM
4.7K Comments
Quote from aqamar5 View quoted comment :
That's what you get for being greedy. Everyone that added this 4th line (after adding the free line in November) will get the same Christmas present. Knowing you can only have the promo once you should not have added the extra line in December.
Quote from aqamar5 View quoted comment :
That's what you get for being greedy. Everyone that added this 4th line (after adding the free line in November) will get the same Christmas present. Knowing you can only have the promo once you should not have added the extra line in December.
Been here for 3 years, and this is your first post? well you double posted same comment.

Think I'm in better hands trusting Jman100. And how is it greedy when they offer FLOU3, and then FLOU4. . .to sign up for them?

It says might take 2-3 billing cycles to be reflected correctly, as usual (but normally faster). Can always chat in to get corresponding bill credit until promo sticks.

Anyways, hope you decide to take advantage of the free line they are offering. . .
Last edited by needgeech December 25, 2020 at 07:30 PM.

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