Portsmouth County, VA Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Portsmouth County, VA

Coverage rankings for Portsmouth County, VA

T-Mobile currently ranks first for coverage in this area, with a coverage score of 99.3. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile99.3100.0%100.0%100.0%98.6% -79 dBm
2Verizon97.5100.0%100.0%97.8%92.8% -87 dBm
3AT&T84.3100.0%100.0%94.8%49.0% -107 dBm

Scores include coverage area, network type, and average signal strength.

Cell phone coverage map for Portsmouth County, VA

Zoom in for local detail. Tap or click a colored area to see coverage and signal details. On mobile, use two fingers to move the map.

Coverage Key
Less covered More covered
Darker areas mean the carrier covers more of that location.

Map data © OpenStreetMap contributors, © CARTO. Rendered with MapLibre. FCC BDC mobile coverage processed by Compare Wireless Carriers.

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Cell phone coverage by network in Portsmouth County, VA

#1

T-Mobile

Coverage Score 99.3
In Portsmouth County, VA
Overall
100.0%
4G LTE
100.0%
5G
100.0%
Fast 5G
98.6%
Average Signal -79 dBm
#2

Verizon

Coverage Score 97.5
In Portsmouth County, VA
Overall
100.0%
4G LTE
100.0%
5G
97.8%
Fast 5G
92.8%
Average Signal -87 dBm
#3

AT&T

Coverage Score 84.3
In Portsmouth County, VA
Overall
100.0%
4G LTE
100.0%
5G
94.8%
Fast 5G
49.0%
Average Signal -107 dBm
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Coverage by city in Portsmouth County, VA

Cities and towns are shown for county-level comparison. Coverage percentages use land-area only coverage.

CityVerizonAT&TT-Mobile
Portsmouth, VA 100.0% 100.0% 97.8% 92.8% -87 dBm 100.0% 100.0% 94.8% 49.0% -107 dBm 100.0% 100.0% 100.0% 98.6% -79 dBm
Chesapeake, VA 86.4% 86.4% 48.9% 35.3% -94 dBm 86.1% 86.1% 51.7% 31.7% -111 dBm 79.0% 78.9% 75.0% 63.1% -86 dBm
Suffolk, VA 91.8% 91.8% 34.5% 22.6% -97 dBm 81.3% 81.3% 39.2% 28.4% -113 dBm 67.3% 67.2% 60.2% 44.3% -91 dBm

About The Coverage Data

Coverage and signal estimates are derived by Compare Wireless Carriers from carrier-reported data in the FCC’s National Broadband Coverage Map, last updated in June 2025. “Percent covered” shows how much of the city or ZIP code area has a carrier signal, whether weak or strong. Signal bars show the estimated average signal strength in areas of Portsmouth County, VA where that carrier has coverage.

If a carrier says you should have service but you do not, run a challenge test with the FCC Mobile Speed Test App. The FCC uses those results to check carrier-submitted coverage data and requires a carrier response when enough tests show a pattern of inaccurate coverage reporting.