Island, WA Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Island, WA

Coverage rankings for Island, WA

T-Mobile currently ranks first for coverage in this area, with a coverage score of 85.2. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile85.288.3%88.3%79.7%65.0% -89 dBm
2AT&T69.192.0%91.9%58.3%33.9% -115 dBm
3Verizon68.697.9%97.9%38.2%20.8% -99 dBm

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

Cell phone coverage map for Island, WA

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 Island, WA

#1

T-Mobile

Coverage Score 85.2
In Island, WA
Overall
88.3%
4G LTE
88.3%
5G
79.7%
Fast 5G
65.0%
Average Signal -89 dBm
#2

AT&T

Coverage Score 69.1
In Island, WA
Overall
92.0%
4G LTE
91.9%
5G
58.3%
Fast 5G
33.9%
Average Signal -115 dBm
#3

Verizon

Coverage Score 68.6
In Island, WA
Overall
97.9%
4G LTE
97.9%
5G
38.2%
Fast 5G
20.8%
Average Signal -99 dBm
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Coverage by city in Island, WA

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

CityVerizonAT&TT-Mobile
Camano, WA 99.2% 99.2% 32.7% 13.5% -98 dBm 94.5% 94.5% 60.6% 30.6% -115 dBm 91.5% 91.5% 72.9% 54.7% -90 dBm
Camano Island, WA 99.2% 99.2% 33.7% 14.7% -98 dBm 94.4% 94.4% 61.0% 30.8% -115 dBm 91.4% 91.4% 71.8% 53.9% -90 dBm
Clinton, WA 100.0% 100.0% 73.1% 69.2% -88 dBm 96.2% 96.2% 84.6% 15.4% -114 dBm 96.2% 96.2% 96.2% 96.2% -79 dBm
Coupeville, WA 100.0% 100.0% 61.3% 35.5% -95 dBm 100.0% 100.0% 90.3% 51.6% -105 dBm 100.0% 100.0% 96.8% 83.9% -91 dBm
Freeland, WA 100.0% 100.0% 76.1% 76.1% -98 dBm 99.1% 99.1% 89.0% 67.9% -110 dBm 97.2% 97.2% 94.5% 84.4% -82 dBm
Greenbank, WA 85.2% 85.2% 17.1% 10.0% -102 dBm 81.9% 81.9% 34.2% 15.2% -118 dBm 74.2% 74.2% 68.4% 51.6% -91 dBm
Langley, WA 96.3% 96.3% 55.6% 44.4% -96 dBm 100.0% 100.0% 92.6% 92.6% -114 dBm 92.6% 92.6% 88.9% 85.2% -80 dBm
Oak Harbor, WA 100.0% 100.0% 58.6% 28.9% -93 dBm 99.2% 99.2% 89.1% 66.5% -110 dBm 97.7% 97.7% 96.2% 91.0% -82 dBm
Whidbey Island Station, WA 100.0% 100.0% 60.0% 38.9% -92 dBm 100.0% 100.0% 96.8% 75.8% -114 dBm 100.0% 100.0% 100.0% 100.0% -83 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 Island, WA 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.