Llano County, TX Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Llano County, TX

Coverage rankings for Llano County, TX

AT&T currently ranks first for coverage in this area, with a coverage score of 78.2. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1AT&T78.293.2%93.1%69.5%60.1% -115 dBm
2Verizon67.594.0%94.0%39.4%22.2% -100 dBm
3T-Mobile63.270.3%69.6%50.6%32.8% -94 dBm

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

Cell phone coverage map for Llano County, TX

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 Llano County, TX

#1

AT&T

Coverage Score 78.2
In Llano County, TX
Overall
93.2%
4G LTE
93.1%
5G
69.5%
Fast 5G
60.1%
Average Signal -115 dBm
#2

Verizon

Coverage Score 67.5
In Llano County, TX
Overall
94.0%
4G LTE
94.0%
5G
39.4%
Fast 5G
22.2%
Average Signal -100 dBm
#3

T-Mobile

Coverage Score 63.2
In Llano County, TX
Overall
70.3%
4G LTE
69.6%
5G
50.6%
Fast 5G
32.8%
Average Signal -94 dBm
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Coverage by city in Llano County, TX

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

CityVerizonAT&TT-Mobile
Bluffton, TX 100.0% 100.0% 38.2% 6.8% -92 dBm 100.0% 100.0% 99.6% 75.9% -107 dBm 81.3% 81.3% 35.5% 13.5% -102 dBm
Buchanan Dam, TX 100.0% 100.0% 80.9% 51.9% -90 dBm 100.0% 100.0% 100.0% 79.0% -107 dBm 90.1% 90.1% 79.0% 57.4% -90 dBm
Buchanan Lake Village, TX 100.0% 100.0% 25.8% 0.0% -99 dBm 100.0% 100.0% 100.0% 96.8% -112 dBm 100.0% 100.0% 100.0% 83.9% -89 dBm
Castell, TX 94.5% 94.4% 35.8% 19.2% -101 dBm 93.2% 93.1% 70.5% 62.1% -116 dBm 65.7% 64.7% 44.8% 27.3% -95 dBm
Horseshoe Bay, TX 100.0% 100.0% 65.7% 28.8% -92 dBm 100.0% 100.0% 99.0% 68.6% -107 dBm 100.0% 100.0% 99.7% 91.3% -84 dBm
Kingsland, TX 100.0% 100.0% 93.7% 84.2% -85 dBm 100.0% 100.0% 99.5% 86.8% -102 dBm 94.2% 94.2% 86.3% 68.4% -92 dBm
Llano, TX 100.0% 100.0% 77.3% 58.2% -89 dBm 100.0% 100.0% 99.1% 95.5% -105 dBm 100.0% 100.0% 100.0% 96.4% -81 dBm
Sunrise Beach Village, TX 100.0% 100.0% 29.4% 26.5% -89 dBm 100.0% 100.0% 100.0% 82.4% -107 dBm 100.0% 100.0% 100.0% 91.2% -86 dBm
Tow, TX 97.4% 97.4% 0.0% 0.0% -101 dBm 100.0% 100.0% 92.1% 78.9% -103 dBm 100.0% 100.0% 100.0% 97.4% -77 dBm
Valley Spring, TX 89.3% 89.2% 43.7% 28.7% -105 dBm 86.6% 86.6% 17.5% 16.5% -118 dBm 78.6% 78.6% 55.7% 35.1% -96 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 Llano County, TX 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.