Carrierlytics City Coverage Guide

Miller City, IL 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 Miller City, IL ZIP codes, Carrierlytics compares the top-performing networks and the cheapest plans that use them.



Cell phone coverage map for Miller City, IL

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.

Loading coverage map...


Cell phone coverage rankings by network in Miller City, IL

#1

AT&T

Coverage Score 68.3
In Miller City, IL
Overall
98.0%
4G LTE
98.0% avg. -111 dBm 4G LTE signal where 4G LTE coverage exists: avg. -111 dBm
5G
85.9% avg. -118 dBm 5G signal where 5G coverage exists: avg. -118 dBm
Fast 5G
49.3% avg. -116 dBm Fast 5G signal where Fast 5G coverage exists: avg. -116 dBm
Alexander County, IL covered 89.4%
#2

Verizon

Coverage Score 45.0
In Miller City, IL
Overall
93.8%
4G LTE
93.8% avg. -102 dBm 4G LTE signal where 4G LTE coverage exists: avg. -102 dBm
5G
1.1% avg. -104 dBm 5G signal where 5G coverage exists: avg. -104 dBm
Fast 5G
0.0%
Alexander County, IL covered 88.2%
#3

T-Mobile

Coverage Score 23.1
In Miller City, IL
Overall
20.1%
4G LTE
20.1% avg. -108 dBm 4G LTE signal where 4G LTE coverage exists: avg. -108 dBm
5G
5.0% avg. -99 dBm 5G signal where 5G coverage exists: avg. -99 dBm
Fast 5G
0.4% avg. -93 dBm Fast 5G signal where Fast 5G coverage exists: avg. -93 dBm
Alexander County, IL covered 31.3%

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

Sponsored US Mobile

Coverage varies by neighborhood. Your carrier shouldn’t.

US Mobile lets you switch between all three major networks, so you can choose the one that works best where you actually use your phone.

Choose your network
Dark Star Light Speed Warp 5G
Unlimited plans from
$22.50/mo
Phone + home internet bundle from
$47/mo
Shop US Mobile

Pricing, network access, switching terms, and home internet availability may vary.


Best phone plans for Miller City, IL

Best phone plans on AT&T's network for Miller City, IL

68.3 AT&T coverage score Ranked #1 in Miller City, IL
See all plans on AT&T Compare all phone plans

Related ZIP codes were found, but coverage scores are not available for them yet.

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 Miller City, IL 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.