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Cell Coverage in Markham, Ontario
Performance by Carrier in Markham
Compare real-world download speeds, upload performance, and latency for major carriers in Markham — based on millions of crowdsourced speed tests to help you find the fastest, most reliable network.
DownDownload
492.1Mbps
UpUpload
36.3Mbps
Reliab.Reliability
10.0/ 10
Over 100 tests conducted
DownDownload
104.1Mbps
UpUpload
28.5Mbps
Reliab.Reliability
7.2/ 10
Over 200 tests conducted
DownDownload
443.2Mbps
UpUpload
46.2Mbps
Reliab.Reliability
10.0/ 10
Over 200 tests conducted
DownDownload
57.6Mbps
UpUpload
11.9Mbps
Reliab.Reliability
9.1/ 10
77 tests conducted
These results compare 4 mobile carriers measured in Markham — Telus, Vidéotron, Bell Mobility, Rogers — using median values calculated from crowdsourced speed tests. Each card shows download speed, upload speed, and reliability to give you a complete picture of real-world network performance.
Bell Mobility delivers the fastest median download at 492.1 Mbps, making it the top performer for raw download throughput. Telus ranks highest for reliability with a score of 10.0/10, reflecting consistent connection quality across tests.
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Network Performance
Based on crowdsourced speed tests and signal measurements in Markham, Ontario, get a complete view of mobile performance with area-wide benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics from real-world tests, then compare carriers side-by-side for speed, responsiveness, and availability.
Median Performance
Download
217.3Mbps
Upload
30.6Mbps
Latency
20ms
Reliability
9.7/ 10
Top Performers
Best Download: Bell Mobility
492.1 Mbps
Best Upload: Telus
46.2 Mbps
Best Latency: Bell Mobility
17 ms
Best Reliability: Telus
10.0 / 10
Based on over 700 speed tests
Network Performance aggregates all measured carriers in Markham 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 700 tests. Current medians are 217.3 Mbps download, 30.6 Mbps upload, and 20 ms latency.
Cell Coverage in Markham: FAQ
What is the best cell phone carrier in Markham?
Based on crowdsourced speed tests in Markham, Bell Mobility currently leads in median download speeds. Compare carriers in the performance table above for the latest results.
Why might this page show limited data for Markham?
We need at least 25 recent speed tests to generate reliable local metrics. If we don't have enough tests yet, the page focuses on maps and nearby locations while we keep collecting data.
What is the reliability score?
The reliability score summarizes how dependable mobile performance is in Markham. It uses a 0.0 to 10.0 scale (higher is better) and is calculated from real-world speed test percentiles with weighted components: download (50%), latency (30%), and upload (20%). It evaluates the lower-end experience using the bottom 10%, 5%, and 1% percentiles when enough samples are available. If local speed testing is limited, a coverage-based fallback is used from signal quality distribution (great/good/poor).
How can I check coverage at my specific address in Markham?
Use the interactive map to check signal strength at your exact address. Visit the CoverageMap interactive map to explore 4G/5G availability.
How can I contribute coverage data for Markham?
Download the CoverageMap app and run a few speed tests with location enabled. Your results help improve coverage accuracy and unlock local rankings faster.
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