Carrierlytics State Coverage Guide

Connecticut Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Connecticut.

Using FCC mobile coverage data across cities, counties, and ZIP codes in Connecticut, Carrierlytics compares the top-performing networks and the cheapest plans that use them.



Cell phone coverage map for Connecticut

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 Carrierlytics.

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Cell phone coverage rankings by network in Connecticut

#1

T-Mobile

Coverage Score 81.8
In Connecticut
Overall
87.3%
4G LTE
87.2% avg. -93 dBm 4G LTE signal where 4G LTE coverage exists: avg. -93 dBm
5G
77.6% avg. -89 dBm 5G signal where 5G coverage exists: avg. -89 dBm
Fast 5G
56.0% avg. -85 dBm Fast 5G signal where Fast 5G coverage exists: avg. -85 dBm
#2

Verizon

Coverage Score 67.5
In Connecticut
Overall
94.2%
4G LTE
94.2% avg. -92 dBm 4G LTE signal where 4G LTE coverage exists: avg. -92 dBm
5G
36.8% avg. -93 dBm 5G signal where 5G coverage exists: avg. -93 dBm
Fast 5G
22.2% avg. -88 dBm Fast 5G signal where Fast 5G coverage exists: avg. -88 dBm
#3

AT&T

Coverage Score 65.2
In Connecticut
Overall
94.3%
4G LTE
94.3% avg. -106 dBm 4G LTE signal where 4G LTE coverage exists: avg. -106 dBm
5G
61.1% avg. -112 dBm 5G signal where 5G coverage exists: avg. -112 dBm
Fast 5G
41.5% avg. -110 dBm Fast 5G signal where Fast 5G coverage exists: avg. -110 dBm
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Coverage by county in Connecticut

Counties are shown for statewide comparison. Coverage percentages use land-area only coverage.

County Verizon AT&T T-Mobile
Capitol County, CT 98.6% 98.6% 49.1% 31.1% 97.4% 97.3% 69.8% 49.7% 93.5% 93.5% 86.1% 65.3%
Greater Bridgeport County, CT 98.0% 98.0% 49.6% 32.4% 99.1% 99.1% 86.1% 46.1% 93.1% 93.0% 86.3% 70.3%
Lower Connecticut River Valley County, CT 95.4% 95.4% 32.4% 20.3% 96.8% 96.8% 59.3% 47.2% 89.1% 89.1% 77.6% 54.7%
Naugatuck Valley County, CT 98.9% 98.9% 61.1% 40.4% 96.4% 96.4% 72.5% 46.5% 92.0% 92.0% 83.5% 64.2%
Northeastern Connecticut County, CT 92.7% 92.7% 23.0% 10.8% 94.8% 94.8% 41.5% 28.3% 93.9% 93.9% 81.8% 50.6%
Northwest Hills County, CT 81.3% 81.3% 15.8% 7.6% 80.1% 80.1% 42.4% 28.8% 62.1% 61.9% 51.3% 32.8%
South Central Connecticut County, CT 98.5% 98.5% 55.5% 37.7% 98.6% 98.6% 80.7% 48.7% 95.3% 95.3% 86.9% 71.5%
Southeastern Connecticut County, CT 97.1% 97.0% 33.7% 18.1% 97.9% 97.9% 59.1% 42.6% 94.2% 94.2% 85.0% 61.5%
Western Connecticut County, CT 94.6% 94.6% 30.7% 16.6% 96.6% 96.6% 67.3% 42.4% 85.3% 85.2% 73.6% 51.6%

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 Connecticut 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.