Carrierlytics City Coverage Guide

Grassflat, PA Cell Phone Coverage Map & Network Rankings (2026)

Don't overpay for a network that struggles where you actually use your phone.

Using FCC mobile coverage data across Grassflat, PA ZIP codes, Carrierlytics compares the top-performing networks and the cheapest plans that use them.



Cell phone coverage map for Grassflat, PA

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 Grassflat, PA

#1

AT&T

Coverage Score 58.0
In Grassflat, PA
Overall
91.9%
4G LTE
91.9% avg. -115 dBm 4G LTE signal where 4G LTE coverage exists: avg. -115 dBm
5G
62.2% avg. -117 dBm 5G signal where 5G coverage exists: avg. -117 dBm
Fast 5G
35.1% avg. -114 dBm Fast 5G signal where Fast 5G coverage exists: avg. -114 dBm
Clearfield County, PA covered 76.7%
#2

Verizon

Coverage Score 57.4
In Grassflat, PA
Overall
97.3%
4G LTE
97.3% avg. -101 dBm 4G LTE signal where 4G LTE coverage exists: avg. -101 dBm
5G
21.6% avg. -99 dBm 5G signal where 5G coverage exists: avg. -99 dBm
Fast 5G
10.8% avg. -98 dBm Fast 5G signal where Fast 5G coverage exists: avg. -98 dBm
Clearfield County, PA covered 87.5%
#3

T-Mobile

Coverage Score 32.9
In Grassflat, PA
Overall
51.4%
4G LTE
51.4% avg. -107 dBm 4G LTE signal where 4G LTE coverage exists: avg. -107 dBm
5G
24.3% avg. -100 dBm 5G signal where 5G coverage exists: avg. -100 dBm
Fast 5G
0.0%
Clearfield County, PA covered 54.4%

County coverage is shown for surrounding-area context and uses land-area only coverage.

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Best phone plans for Grassflat, PA

Best phone plans on AT&T's network for Grassflat, PA

58.0 AT&T coverage score Ranked #1 in Grassflat, PA
See all plans on AT&T Compare all phone plans

Coverage by ZIP code in Grassflat, PA

ZIP code areas can extend beyond city limits, so this table is best used for local comparison around the city.

ZIP Code AT&T T-Mobile Verizon
16834 61.5% 61.5% 33.9% 22.5% 13.3% 13.3% 9.4% 1.4% 96.8% 96.8% 34.9% 14.7%
16839 89.3% 89.3% 53.6% 32.1% 42.9% 42.9% 14.3% 0.0% 96.4% 96.4% 28.6% 14.3%
16858 81.8% 81.8% 72.5% 55.9% 73.4% 73.4% 61.2% 31.7% 96.6% 96.6% 32.8% 20.2%

About The Coverage Data

Coverage and signal estimates are derived by Carrierlytics 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 Grassflat, PA 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.