CHARLESTON · SC · FCC DATA

Best cell phone coverage in Charleston Charleston, South Carolina

Outdoors the carriers report 93.2% (T-Mobile) to 100% (Verizon) of Charleston, SC, but 15.3% of Charleston, SC's area is water, which carriers file differently, so no carrier shows more of the land covered.

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

RESULT · CHARLESTON, SC

Coverage in Charleston, SC

Population 157,665 (Census 2024 estimate)

What stands out in Charleston

  • Verizon reports 83% of Charleston in a moving car, against 43.1% of South Carolina as a whole.
  • Beyond the city limits it thins: across Charleston County, AT&T reports 44.9% in a moving car, against 80.5% in Charleston.
  • T-Mobile loses the most of Charleston in a moving car: 93.2% outdoors, 68.8% in a car.
  • 5G at 35/3 Mbps covers 88% of Charleston, against 57.5% of South Carolina.
≈ NO CLEAR LEADER ON LAND
All three carriers
93.2–100%

AT&T vs T-Mobile vs Verizon in Charleston

=
Verizon
Outdoor
100%
In car
83%
=
AT&T
Outdoor
94.3%
In car
80.5%
=
T-Mobile
Outdoor
93.2%
In car
68.8%

4G and 5G across all carriers in Charleston

4G LTE
100%
5G 7/1
93.5%
5G 35/3
88%

Check your street on each carrier's map

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

Around Charleston, in Charleston County

The towns nearby where one carrier reports the least outdoors: Adams Run (T-Mobile 37.5%), Isle of Palms (AT&T 81.3%), Mount Pleasant (AT&T 91.7%), Awendaw (T-Mobile 94.7%).

Questions about coverage in Charleston

Q1

How does Charleston compare with the rest of South Carolina?

Outdoors Verizon 100% (state 96%), AT&T 94.3% (state 87.7%), T-Mobile 93.2% (state 72.5%); in a moving car Verizon 83% (state 43.1%), AT&T 80.5% (state 55.5%), T-Mobile 68.8% (state 30.8%).

ZIP codes mostly inside Charleston

29401, 29403, 29407, 29409, 29412, 29424, 29425, 29492.

See the statewide South Carolina comparison, or coverage in Columbia, North Charleston.

Cities with figures closest to Charleston's: Provo, UT, Nashville, TN, Temecula, CA, San Jose, CA, Simi Valley, CA.