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T-Mobile at Costco Mobile Phones

Visit the T-Mobile store in Greenbelt and discover America's largest, fastest, and most reliable 5G network. Shop our best low-cost plans with no annual service contracts - plus our best smartphones, cell phones, tablets, internet devices, and latest promotions. If you're interested in joining the Un-carrier, our staff at 8819 Greenbelt Rd can assist you in the switching process. Masks are optional for fully vaccinated guests except where state or local ordinances require all guests wear a mask at all times.

Website: t-mobile.com

Phone: (714) 224-8002

Cross Streets: Near the intersection of S Harbor Blvd and Costco Way

Closing soon · 7 PM

  • Sat 9:00 AM - 7:00 PM

900 S Harbor Blvd Fullerton, CA 92832 ·2173.23 mi

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Amenities

  • Parking

Reviews

yelp
2.0 2 reviews
5 star
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0 1 star
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Michael V. 07/20/25

Went to the Fullerton Costco because they had a T-Mobile sub store to get my girlfriend a new i phone. The staff was helpful, unfortunately they don't have any phones in stock on site. Since...

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Lidia G. 11/22/25

Terible servio mas hacen esperar una hora oh mas no entiendo tanto dineron que ganan y no para tener mas rapido servicio

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