FULLERTON · CA · FCC DATA

Best cell phone coverage in Fullerton Fullerton, California

AT&T, T-Mobile and Verizon all report outdoor coverage of 100% of Fullerton, CA, so no carrier wins on outdoor coverage here.

Carrier-reported coverage from FCC carrier filings as of December 31, 2025, not measured signal. How these figures are read

RESULT · FULLERTON, CA

Coverage in Fullerton, CA

Population 140,054 (Census 2024 estimate)

What stands out in Fullerton

  • Verizon reports 98.8% of Fullerton in a moving car, against 33.6% of California as a whole.
  • Beyond the city limits it thins: across Orange County, T-Mobile reports 56.8% in a moving car, against 91.3% in Fullerton.
  • 5G at 35/3 Mbps covers 100% of Fullerton, against 47.7% of California.
✓ ALL THREE REPORT THE SAME
All three carriers
100%

AT&T vs T-Mobile vs Verizon in Fullerton

=
Verizon
Outdoor
100%
In car
98.8%
=
AT&T
Outdoor
100%
In car
98.6%
=
T-Mobile
Outdoor
100%
In car
91.3%

4G and 5G across all carriers in Fullerton

4G LTE
100%
5G 7/1
100%
5G 35/3
100%

Check your street on each carrier's map

Verizon coverage map → AT&T coverage map → T-Mobile coverage map →

Around Fullerton, in Orange County

The towns nearby where one carrier reports the least outdoors: Silverado (T-Mobile 8.7%), Rancho Mission Viejo (T-Mobile 66.4%), Laguna Beach (T-Mobile 85%), Brea (T-Mobile 91.5%).

Questions about coverage in Fullerton

Q1

How does Fullerton compare with the rest of California?

Outdoors Verizon 100% (state 64.3%), AT&T 100% (state 57.3%), T-Mobile 100% (state 51.4%); in a moving car Verizon 98.8% (state 33.6%), AT&T 98.6% (state 36.2%), T-Mobile 91.3% (state 26.8%).

ZIP codes mostly inside Fullerton

92831, 92832, 92833, 92835.

See the statewide California comparison, or coverage in San Francisco, Oakland, Chula Vista, Fremont, Huntington Beach, Oceanside, Roseville, Salinas, Hayward, Visalia, Menifee, Santa Maria.

Cities with figures closest to Fullerton's: Modesto, CA, San Antonio, TX, Stockton, CA, Arlington, TX, Santa Maria, CA.