T-Mobile at Costco

Located inside Costco Wholesale, Experience the power of T-Mobile's 5G network by switching to T-Mobile. Staffed by experienced T-Mobile employees, we offer exclusive benefits for Costco members. Membership Required.

Explore the power of 5G at our T-Mobile Authorized Retailer located at 35 Reaville Ave, Flemington, NJ. Discover great deals on the latest devices like the iPhone 16 and Galaxy S25. Our Retail Sales team is here to help with expert advice, activations, and accessories. Visit us today or call (908) 824-2173 to get started with next-gen connectivity.

Stay connected with AT&T in Flemington. We offer phones, tablets, smartwatches, and connected devices from all of your favorite brands. We also offer wireless data plans in Flemington for every need. Enjoy the flexibility of an Flemington prepaid phone plan with no annual contract and no credit check. Find the right data plan for all your text and data by choosing one of our popular unlimited data plans. Get a new device and use our nationwide AT&T 5G service, which comes with all of our unlimited data plans for no extra cost.