SAN BERNARDINO · CA · FCC DATA

Best cell phone coverage in San Bernardino San Bernardino, California

AT&T, T-Mobile and Verizon all report outdoor coverage of between 99.1% and 100% of San Bernardino, CA, so no carrier wins on outdoor coverage here. In a moving car the filings differ more: Verizon reports 97.1% against 88.8% for AT&T.

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

RESULT · SAN BERNARDINO, CA

Coverage in San Bernardino, CA

Population 224,775 (Census 2024 estimate)

What stands out in San Bernardino

  • Verizon reports 97.1% of San Bernardino in a moving car, against 33.6% of California as a whole.
  • Beyond the city limits it thins: across San Bernardino County, Verizon reports 30.6% in a moving car, against 97.1% in San Bernardino.
  • 5G at 35/3 Mbps covers 99.1% of San Bernardino, against 47.7% of California.
  • T-Mobile loses the most of San Bernardino in a moving car: 99.1% outdoors, 86.8% in a car.
✓ ALL THREE WITHIN 0.9 POINTS
All three carriers
99.1–100%

AT&T vs T-Mobile vs Verizon in San Bernardino

=
Verizon
Outdoor
100%
In car
97.1%
=
AT&T
Outdoor
99.2%
In car
88.8%
=
T-Mobile
Outdoor
99.1%
In car
86.8%

4G and 5G across all carriers in San Bernardino

4G LTE
100%
5G 7/1
100%
5G 35/3
99.1%

Check your street on each carrier's map

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

Around San Bernardino, 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 San Bernardino

Q1

How does San Bernardino compare with the rest of California?

Outdoors Verizon 100% (state 64.3%), AT&T 99.2% (state 57.3%), T-Mobile 99.1% (state 51.4%); in a moving car Verizon 97.1% (state 33.6%), AT&T 88.8% (state 36.2%), T-Mobile 86.8% (state 26.8%).

ZIP codes mostly inside San Bernardino

92369, 92401, 92405, 92408, 92410, 92411, 92415.

See the statewide California comparison, or coverage in San Francisco, Oakland, Moreno Valley, Oxnard, Elk Grove, Santa Rosa, Roseville, Clovis, Fairfield, Carlsbad, Santa Maria, Ventura.

Cities with figures closest to San Bernardino's: Oklahoma City, OK, Riverside, CA, Las Cruces, NM, Concord, CA, Oceanside, CA.