Don’t miss this: Score $450 with T-Mobile’s new upgrade and add-a-line deal at costco

Thinking of upgrading your phone or switching providers?

Costco and T-Mobile are rolling out a limited-time promotion that could put serious cash back in your pocket.

This summer, customers who port their number and finance a device at Costco can walk away with up to $450 in rewards.

The offer runs from June 18 through July 20 and applies to both new and existing T-Mobile customers.



Costco and T-Mobile are offering customers a total of $450 in value for switching and upgrading. The breakdown includes a $200 Costco Shop Card and a $250 Virtual Visa prepaid card.

To qualify, you must port your number from a competing carrier and finance a new phone at Costco. This offer is only valid when paired with one of T-Mobile’s latest premium plans.


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Score $450 with T-Mobile’s new upgrade and add-a-line deal at costco. Image source: Mika Baumeister / Unsplash


Eligibility extends to both new and current T-Mobile customers meeting certain criteria. New customers must bring their number from an approved carrier to T-Mobile.

Eligible carriers include AT&T, Verizon, Claro, UScellular, Xfinity, Spectrum, and Liberty Puerto Rico.

Existing customers must add a new line, finance a device, and be on the Experience More or Experience Beyond plan.



Start by visiting a participating Costco location between June 18 and July 20. Port your number from one of the eligible providers listed above.

Choose and finance a new device through T-Mobile at Costco. Make sure you're on either the Experience More or Experience Beyond plan to receive both rewards.

This promotion can be stacked with many ongoing T-Mobile offers, such as flagship phone promotions. Additionally, Costco waives the standard $35 Device Connection Charge.

This extra layer of savings adds to the appeal for customers upgrading or switching. More information may be released when the promotion goes live.



Customers can receive up to twelve $200 Costco Shop Cards per account. Additionally, they can get up to four $250 Virtual Visa cards.

That’s a potential combined value of $3,400 when maximizing the offer across multiple lines. This is ideal for families or those managing several lines under one account.

If you’ve been on the fence about switching carriers, this could be the right moment. The $450 reward combined with waived fees makes the deal especially compelling.

Existing customers also benefit when adding a line under the eligible plans. This limited-time offer brings tangible savings with minimal friction.

Make sure your current carrier is on the eligible list before heading to Costco.

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Key Takeaways

  • Costco is launching a promotion from June 18 to July 20 offering $450 in rewards to customers who port their number to T-Mobile and finance a new device.
  • The reward includes a $200 Costco Shop Card and a $250 Virtual Visa prepaid card.
  • Offer is valid for both new and existing customers who meet the criteria, including signing up for Experience More or Experience Beyond plans.
  • Promotion is stackable with many existing T-Mobile offers, and Costco waives the usual $35 Device Connection Charge.
Have you switched to T-Mobile recently or scored one of these promos before? Are you considering this offer and have questions about how to make it work? Share your experience or post your questions below—we’re here to help. We always aim to keep readers informed, especially when it means real savings.
 

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News, deals, games, and bargains for Americans over 60. From everyday expenses like groceries and eating out, to electronics, fashion and travel, The GrayVine is all about helping you make your money go further.

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The GrayVine searches for the best deals, discounts, and bargains for over 60's. From everyday expenses like groceries and eating out, to electronics, fashion and travel, we're all about helping you make your money go further.
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