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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 2:18 AM
797 Comments
Joined Jul 2013
er82Dec 25, 2020 2:18 AM
797 Comments
Quote from Kogunti96 View quoted comment :
Heads up, you've been un-enrolled from T-Mobile your promotional service discount as the account no longer meets promotion eligibility criteria. This isnthe message I received from T-Mobile this morning. This is terrible on the part of T-Mobile because they never stated that you can't take advantage of both deals for free lines. People on this thread have been saying they have received 7-10 free lines during their time with T-Mobile. I'm so angry!!!
Calm down, a lot of people have been getting these messages. I got them myself 4 times and then got the message that I'd been re-enrolled. Give it a day for the system to work everything out.
Dec 25, 2020 2:20 AM
415 Comments
Joined Feb 2005
tiger0Dec 25, 2020 2:20 AM
415 Comments
Quote from Blitz64 View quoted comment :
In November Thanksgiving week. I got both free iphone 12 and free line. I thought I got lucky since they should not stack.

Using the trick:
development tool -> manageaccount -> Network -> XHR -> Response -> lines -> 0: Object -> aal -> discounts -> 0

I finally figured out the promotion that was applied was "2020 3rd Line On Us 3" being applied to my 4th line. So it was a different promotion after all and I got lucky as a new customer (2 lines paid, 2 lines free).

Anyways, they have already closed this loophole starting Dec 20th so new customers no longer can stack "3rd line on us" and "line on us 3".
I see the '2020 3rd Line On Us 3' under my promos too. So does this mean we now can't get this new free line promo?
Dec 25, 2020 2:23 AM
788 Comments
Joined Jan 2008
rballnutDec 25, 2020 2:23 AM
788 Comments
Quote from Blitz64 View quoted comment :
I would do this trick from 2 pages back:

Google chrome -> my t-mobile account page -> development tool -> manageaccount -> Network -> XHR -> Response -> lines -> 0: Object -> aal -> discounts -> 0: Object (namee: "2020 Line on us 3", code: "20Q43S", ....)

This will find which line has the "2020 Line on Us 3" active on. and which line doesn't have "2020 Line on Us 3" promo.
Also you can find the start-date of the "2020 Line on Us 3" promo so you can debug more on where the problem is.

Mine doesn't show any of the Line on Us (1, 2, or 3) code on any of the line that suppose to have it. The last line I added for LOU4 is only showing :
name: "Insider Discount", code: "EMPFNBM", amount: 6

I'm guessing I'll have to reach them when the new bill come. Maybe the discount it applied at the account level and not at the line level (if there's such thing).
Dec 25, 2020 2:25 AM
16 Comments
Joined Mar 2011
liheemuiDec 25, 2020 2:25 AM
16 Comments
Quote from gotojanoo View quoted comment :
Rep confirmed its glich. Basically its removed LOU3 and then added back. So it will take time to update system

System memo: Discount Plan Added, Eff date:12/24/2020, Exp date:No Expiration, Discount:****** - 2020 Line on Us 3, User:*****
Where do you get to see system memo?
Dec 25, 2020 2:26 AM
4.5K Comments
Joined Dec 2008
GulllyBoYDec 25, 2020 2:26 AM
4.5K Comments
Quote from liheemui View quoted comment :
Where do you get to see system memo?
I can't. Rep wrote that when i chatted with her.
Dec 25, 2020 2:28 AM
16 Comments
Joined Mar 2011
liheemuiDec 25, 2020 2:28 AM
16 Comments
Quote from gotojanoo View quoted comment :
I can't. Rep wrote that when i chatted with her.
Darn. Mine is removed too. Just looking for some kind of confirmation. Thanks!
Dec 25, 2020 2:31 AM
4.5K Comments
Joined Dec 2008
GulllyBoYDec 25, 2020 2:31 AM
4.5K Comments
Quote from slickdeal1980 View quoted comment :
I just added a line through App text message. I do see SIM card charge on my card. I do not see any change in my account and don't see new line number also. How long will it take for the new number/line to show up in the account?
My number showed up within 2 min. As i had sim card ready. They gave me temp number as i wanna to port in numberbarn number. Somehow my number eligibility says cant port to TMOBILE. I dont know why. Porting denied 3 tomes. I had to deal with Philippines customer support for porting. Main department was closed lol. I got a wait until tomorrow.

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Dec 25, 2020 2:39 AM
1.7K Comments
Joined Dec 2007
angel5000Dec 25, 2020 2:39 AM
1.7K Comments
would i be able to add the free line next tuesday? I have to go to the store to add.
Dec 25, 2020 2:40 AM
80 Comments
Joined Feb 2019
PurpleLanguage405Dec 25, 2020 2:40 AM
80 Comments
This is so far all free-line promo: (doesn't include any 3rd line on us)

Friends & Fam 2 Lines On Us (2 lines)
This One's on Us
2020 Line On Us
2020 Line On Us 2
2020 Line on Us 3 (2 lines)
Total: 7
Last edited by PurpleLanguage405 December 24, 2020 at 06:42 PM.
Dec 25, 2020 2:45 AM
395 Comments
Joined Mar 2008
bbergin76Dec 25, 2020 2:45 AM
395 Comments
Quote from slickdeal1980 View quoted comment :
I just added a line through App text message. I do see SIM card charge on my card. I do not see any change in my account and don't see new line number also. How long will it take for the new number/line to show up in the account?
Mine didn't show up until like midday the next day.
Dec 25, 2020 2:46 AM
4.5K Comments
Joined Dec 2008
GulllyBoYDec 25, 2020 2:46 AM
4.5K Comments
Quote from liheemui View quoted comment :
Darn. Mine is removed too. Just looking for some kind of confirmation. Thanks!
Just got text messege it says. Looks like good sign.
Congrats! You will receive your promotional service discount from T-Mobile as long as you maintain eligibility. View http://t-mo.co/activity for account details.
Dec 25, 2020 3:13 AM
87 Comments
Joined Feb 2011
slickdeal1980Dec 25, 2020 3:13 AM
87 Comments
Quote from bbergin76 View quoted comment :
Mine didn't show up until like midday the next day.
Thanks. Spoke with another rep they said once SIM is shipped it will show up.
Dec 25, 2020 3:14 AM
16 Comments
Joined Mar 2011
liheemuiDec 25, 2020 3:14 AM
16 Comments
Quote from gotojanoo View quoted comment :
Just got text messege it says. Looks like good sign.
Congrats! You will receive your promotional service discount from T-Mobile as long as you maintain eligibility. View http://t-mo.co/activity for account details.
Hmm... I never even got that. It's already been two days. Good for you though!Applause
Dec 25, 2020 3:22 AM
3.3K Comments
Joined Nov 2010
veryseablueDec 25, 2020 3:22 AM
3.3K Comments
I am on Magenta plan, currently have 5 lines, added a free line in Nov, just added a line at costco yesterday, now on my TM account, it shows double line on us 3, but when checking account history/activity, it shows this:

New line xxx-xxx-xxxxx was added to your account on 12/23/2020 at 01:10 PM . This line is on the Magenta (2 line) plan for $130.0 per month plus taxes and fees.
Anyone knows what this means? Thanks.

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Dec 25, 2020 3:27 AM
415 Comments
Joined Feb 2005
tiger0Dec 25, 2020 3:27 AM
415 Comments
Quote from PurpleLanguage405 View quoted comment :
This is so far all free-line promo: (doesn't include any 3rd line on us)

Friends & Fam 2 Lines On Us (2 lines)
This One's on Us
2020 Line On Us
2020 Line On Us 2
2020 Line on Us 3 (2 lines)
Total: 7

So mine says this:

Applied discounts and promotions:
$10 AutoPay Discount

$24 Insider Discount

$10 AutoPay Discount (Additional Lines)
$20 2020 Line on Us 3 (Additional Lines)
$20 2020 3rd Line On Us 3 (Additional Lines)

This '3rd Line On Us 3' is different from 'Line On Us 3'? Does that mean I'm good to do this new free line?

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