Illinois
Cell coverage comparison in Illinois, United States
Based on crowdsourced speed tests and signal measurements in Illinois, United States, the current snapshot reflects over 460,000 speed tests and shows medians of 104.5 Mbps download, 10.0 Mbps upload, and 47 ms latency.
Performance by Carrier in Illinois
Explore median download speeds, upload performance, and network latency for each major mobile carrier in Illinois, calculated from millions of real-world, crowdsourced speed tests. These results reflect typical everyday performance to help you compare carriers and choose the network that delivers the fastest speeds, most responsive connections, and broadest coverage where you live, work, and travel.
Over 100,000 tests conducted
Over 110,000 tests conducted
Over 230,000 tests conducted
Performance by Carrier shows side-by-side results for the primary mobile providers measured in Illinois. Each row reflects download, upload, latency, and reliability for that carrier.
Providers included in this comparison are AT&T, T-Mobile, Verizon. Per-carrier test counts are shown in the table to indicate data accuracy.
Promoted Offers
Network Performance
Get a complete view of mobile network performance across Illinois with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the Illinois-wide snapshot to understand overall trends, then dive deeper to compare individual carriers side-by-side and see how each performs in speed, responsiveness, and availability.
Median Performance
Download
Upload
Latency
Reliability
Top Performers
Best Download: T-Mobile
380.9 Mbps
Best Upload: T-Mobile
25.0 Mbps
Best Latency: T-Mobile
28 ms
Best Reliability: T-Mobile
9.6 / 10
Best Coverage: Verizon
98.8%
Coverage Snapshot
Network Performance aggregates all measured carriers in Illinois to provide a baseline view of typical speeds and latency in the area. Use these medians as a quick indicator of overall network quality.
These medians are calculated from over 460,000 tests. Current medians are 104.5 Mbps download, 10.0 Mbps upload, and 47 ms latency.
Cell Phone Plans Available in Illinois
Compare wireless plans from carriers with coverage in this region.
Mint Mobile 5GB Annual
12 month term
Mint Mobile 5GB Annual
12 month term
- 5 GB Datahigh-speed, then 128Kbps
- Hotspot Included
- Unlimited Minutes
- Unlimited Texts
US Mobile 5GB
Monthly plan
US Mobile 5GB
Monthly plan
- 5 GB Datahigh-speed, then data stops
- Hotspot Included
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
US Mobile Unlimited Starter Dark Star
Monthly plan
US Mobile Unlimited Starter Dark Star
Monthly plan
- Unlimited Datahigh-speed
- 20 GB Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
Visible Base
Monthly plan
Visible Base
Monthly plan
- Unlimited Datahigh-speed
- Unlimited Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
Mint Mobile Unlimited Annual
12 month term
Mint Mobile Unlimited Annual
12 month term
- Unlimited Datahigh-speed
- 20 GB Hotspot
- Unlimited Minutes
- Unlimited Texts
$15/mo first year
Visible+
Monthly plan
Visible+
Monthly plan
- Unlimited Datahigh-speed
- Unlimited Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
$30/mo for 5 years with code 5OFF5
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Cell Coverage in Illinois: FAQ
What is the best cell phone carrier in Illinois?
Why might this page show limited data for Illinois?
What is the reliability score?
How can I check coverage at my specific address in Illinois?
How can I contribute coverage data for Illinois?
Download the CoverageMap app and run a few speed tests with location enabled. Your results help improve coverage accuracy and unlock local rankings faster.
Get the appCheck Coverage at Your Exact Location
Use our interactive coverage map to see detailed signal strength data for any address in Illinois.
Open Interactive Map