FONTANA · CA · FCC DATA

Best cell phone coverage in Fontana Fontana, California

AT&T, T-Mobile and Verizon all report outdoor coverage of 100% of Fontana, 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 · FONTANA, CA

Coverage in Fontana, CA

Population 218,455 (Census 2024 estimate)

What stands out in Fontana

  • T-Mobile reports 94.7% of Fontana in a moving car, against 26.8% of California as a whole.
  • Beyond the city limits it thins: across San Bernardino County, T-Mobile reports 22.3% in a moving car, against 94.7% in Fontana.
  • 5G at 35/3 Mbps covers 100% of Fontana, against 47.7% of California.
✓ ALL THREE REPORT THE SAME
All three carriers
100%

AT&T vs T-Mobile vs Verizon in Fontana

=
Verizon
Outdoor
100%
In car
99.6%
=
AT&T
Outdoor
100%
In car
98.5%
=
T-Mobile
Outdoor
100%
In car
94.7%

4G and 5G across all carriers in Fontana

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 Fontana, in San Bernardino County

The towns nearby where one carrier reports the least outdoors: Lytle Creek (T-Mobile 27.8%), Morongo Valley (T-Mobile 69.7%), Homestead Valley (AT&T 74.2%), Big Bear City (T-Mobile 80.4%).

Questions about coverage in Fontana

Q1

How does Fontana 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 99.6% (state 33.6%), AT&T 98.5% (state 36.2%), T-Mobile 94.7% (state 26.8%).

ZIP codes mostly inside Fontana

92335, 92336, 92337.

See the statewide California comparison, or coverage in Sacramento, Elk Grove, Garden Grove, Palmdale, Sunnyvale, Victorville, Orange, Simi Valley, Antioch, Menifee, Murrieta, Costa Mesa.

Cities with figures closest to Fontana's: Lincoln, NE, Pueblo, CO, Frisco, TX, Killeen, TX, Amarillo, TX.