3. T-Mobile in Fullerton, CA, is a mobile telecommunications company providing cellular, home internet, and TV services to customers throughout Southern California. They are known for their reliable network coverage and competitive pricing.
Operator computes a Health score every night at 2 am HST. It's the one number that tells you if this shop is winning, losing, or steady. Here's how T-Mobile broke down on May 2, 2026.
T-Mobile is indexed in Operator's Mobilephonestore market index for Fullerton, CA.
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The Mobilephonestore shops T-Mobile competes with most often, ranked by Operator's health score. Tap any row for that shop's full page.
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