Isabella County, MI Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Isabella County, MI

Coverage rankings for Isabella County, MI

AT&T currently ranks first for coverage in this area, with a coverage score of 74.9. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1AT&T74.991.0%90.9%69.0%47.5% -113 dBm
2Verizon72.399.6%99.6%40.9%24.6% -95 dBm
3T-Mobile65.065.3%65.2%56.6%40.5% -91 dBm

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

Cell phone coverage map for Isabella County, MI

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 Isabella County, MI

#1

AT&T

Coverage Score 74.9
In Isabella County, MI
Overall
91.0%
4G LTE
90.9%
5G
69.0%
Fast 5G
47.5%
Average Signal -113 dBm
#2

Verizon

Coverage Score 72.3
In Isabella County, MI
Overall
99.6%
4G LTE
99.6%
5G
40.9%
Fast 5G
24.6%
Average Signal -95 dBm
#3

T-Mobile

Coverage Score 65.0
In Isabella County, MI
Overall
65.3%
4G LTE
65.2%
5G
56.6%
Fast 5G
40.5%
Average Signal -91 dBm
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Coverage by city in Isabella County, MI

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

CityVerizonAT&TT-Mobile
Beal City, MI 100.0% 100.0% 84.2% 75.8% -88 dBm 100.0% 100.0% 100.0% 87.4% -113 dBm 100.0% 100.0% 98.9% 95.8% -84 dBm
Blanchard, MI 99.5% 99.5% 19.7% 8.6% -99 dBm 84.3% 84.3% 48.5% 29.1% -119 dBm 21.2% 21.2% 10.9% 2.8% -103 dBm
Lake Isabella, MI 100.0% 100.0% 67.5% 50.6% -91 dBm 100.0% 100.0% 94.0% 90.4% -114 dBm 83.1% 81.9% 71.1% 27.7% -98 dBm
Loomis, MI 100.0% 100.0% 6.3% 0.0% -89 dBm 100.0% 100.0% 100.0% 85.9% -104 dBm 100.0% 100.0% 93.8% 71.9% -90 dBm
Mount Pleasant, MI 100.0% 100.0% 85.0% 62.2% -84 dBm 100.0% 100.0% 100.0% 96.7% -90 dBm 100.0% 100.0% 100.0% 98.9% -73 dBm
Rosebush, MI 100.0% 100.0% 5.0% 5.0% -78 dBm 100.0% 100.0% 90.0% 80.0% -116 dBm 100.0% 100.0% 100.0% 100.0% -77 dBm
Shepherd, MI 100.0% 100.0% 47.6% 9.5% -91 dBm 100.0% 100.0% 100.0% 100.0% -84 dBm 100.0% 100.0% 100.0% 85.7% -91 dBm
Weidman, MI 100.0% 100.0% 47.0% 31.3% -95 dBm 100.0% 100.0% 97.0% 94.0% -107 dBm 88.8% 88.8% 74.6% 47.8% -93 dBm
Winn, MI 100.0% 100.0% 0.0% 0.0% -64 dBm 100.0% 100.0% 71.4% 28.6% -119 dBm N/A N/A N/A N/A N/A
Clare, MI 100.0% 100.0% 80.2% 63.7% -86 dBm 100.0% 100.0% 100.0% 92.3% -98 dBm 100.0% 100.0% 100.0% 96.7% -78 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 Isabella County, MI 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.