Costco, Add Free Unlimited T-Mobile Line & Get $100 Gift Card

Costco, Add Free Unlimited T-Mobile Line & Get $100 Gift Card

Update: $100 offer is valid from July 3 to July 9. Free line promotion ends July 6.


T-Mobile is offering its customers new lines for free. If you already have a T-Mobile account with at least two voice lines, you can add another line for free. I wrote about that promotion here. Costco is also offering the same deal on July 4th. But on July 5th Costco is running an even better promotion. You can still get your free line and a $100 gift card.

This is an in-store promotion, so you have to visit a Costco location to add your free line.

You probably need to have one of these plans to qualify: Magenta, Essentials, ONE, or Simple Choice. It would be an unlimited line with voice, text and data. The offer was posted on SD and it is advertised in stores, so I’m not sure if there are any other limitations.

Guru’s Wrap-up

Sweet deal if you have a Costco location near you. You probably won’t be eligible if you already added a free line through the T-Mobile deal. Let me know if you see the offer in your store.

moomoo signup bonus

6 thoughts on “Costco, Add Free Unlimited T-Mobile Line & Get $100 Gift Card

  1. I’m at Costco now the $100 offer is good 3-9 July, add a free line 3-6 July but Costco rep is saying the offers are not stackable.

      • Costco has the terms on a clipboard which says cant be stacked with promotional offers but after some disagreements a supervisor came and said I can do it since the free line is not a promotional offer. So good to go have to go online to claim the $100 and its mailed to you. Basically can still do both offers until 6 July according to the sign at the Kiosk.

          • I just applied online for the $100 Costco Gift card through http://www.mypromochoice.com the terms also say “device must be active for at least 3 billing cycles” & allow up to 14 weeks processing time. That may be a problem for me since im using the same phone. I may have to keep swapping sim cards for a few months to keep the # active & pinging the registered IMEI since I don’t have an extra phone to keep it active. Hopefully ot works.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.