T-Mobile is making things easier for customers. | Image by The Boston Globe
T-Mobile has been on a bit of a generous streak lately. From slashing fiber pricing to dangling up to $4,800 in front of switchers, T-Mobile's Un-carrier spirit is showing. The latest such move is to blend your T-Mobile account with your Costco credentials.
Costco perks are easier to access now
Time to link your Costco and T-Mobile accounts. | Image by The Mobile Report
Costco has long been a hack for T-Mobile customers. The retailer offers legendary perks, including waiving the $35 Device Connection Charge (DCC) on new lines and upgrades, and gift cards for line activations and device purchases.
While these benefits are exclusive to Costco members, savvy shoppers know that bringing a friend with a card is a reliable loophole.
Previously, scoring a T-Mobile discount meant a mandatory trek to the warehouse, but those days are over.
This is a great pro consumer change.
solarsystemoccupant, Reddit user, May 2026
Yes, no longer takes an hour to add a line or finance a device.
desterpot, Reddit user, May 2026
Sign in using your Costco membership
Stacking discounts. | Image by The Mobile Report
T-Mobile now lets you sign in via Costco to access membership benefits from your couch, perThe Mobile Report.
To link your Costco membership with your T-Mobile account, visit the dedicated page on Costco’s website. Sign in to your Costco account, after which you will be redirected to T-Mobile's website. Enter your T-Mobile credentials, and voila, a Costco banner appears at the top to confirm that the two accounts have been linked.
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The T-Mobile website operates normally, with Costco membership perks listed when you expand the banner.
Some users say they are redirected to T-Life after trying to link their accounts using the Costco app. If that happens to you, try visiting Costco's website in incognito or private browser mode.
What kind of T-Mobile deals do you like most?
Too good
With the two accounts paired, there will be no more guessing about whether a T-Mobile offer plays nicely with a Costco promo. For instance, the Costco $75 gift card deal can be combined with the recent $400 rebate offer from T-Mobile, for total savings of $5,100 for a family of four.
Sidelining staff again
As great as this is for your schedule, it's another sign of T-Mobile's push to move everything online.
While this sidelines store staff and potentially impacts their commissions, it saves you a massive amount of time and prevents employees from attempting to upsell you on accessories and other extras you don't need.
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Anam Hamid is a computer scientist turned tech journalist who has a keen interest in the tech world, with a particular focus on smartphones and tablets. She has previously written for Android Headlines and has also been a ghostwriter for several tech and car publications. Anam is not a tech hoarder and believes in using her gadgets for as long as possible. She is concerned about smartphone addiction and its impact on future generations, but she also appreciates the convenience that phones have brought into our lives. Anam is excited about technological advancements like folding screens and under-display sensors, and she often wonders about the future of technology. She values the overall experience of a device more than its individual specs and admires companies that deliver durable, high-quality products. In her free time, Anam enjoys reading, scrolling through Reddit and Instagram, and occasionally refreshing her programming skills through tutorials.
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