Sarnia

Cell coverage comparison in Sarnia, Ontario

Based on crowdsourced speed tests and signal measurements in Sarnia, Ontario using data from Lambton, the current snapshot reflects 37 speed tests and shows medians of 46.7 Mbps download, 2.7 Mbps upload, and 49 ms latency.

Not enough data for Sarnia

Showing performance data for Lambton instead. We need at least 25 speed tests in Sarnia to generate local metrics.

Performance by Carrier in Lambton

Explore median download speeds, upload performance, and network latency for each major mobile carrier in Lambton, 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.

Bell Mobility

DownDownloadNo data

UpUploadNo data

Reliab.ReliabilityNo data

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Rogers

DownDownloadNo data

UpUploadNo data

Reliab.ReliabilityNo data

View Carrier See Plans

DownDownload49.1 Mbps

UpUpload2.8 Mbps

Reliab.Reliability3.5 / 10

30 tests conducted

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Videotron

DownDownload6.4 Mbps

UpUpload0.6 Mbps

Reliab.Reliability0.0 / 10

Less than 10 tests conducted

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Performance by Carrier shows side-by-side results for the primary mobile providers measured in Lambton. Each row reflects download, upload, latency, and reliability for that carrier.

Providers included in this comparison are Bell Mobility, Rogers, Videotron, Telus. Per-carrier test counts are shown in the table to indicate data accuracy.

Network Performance in Lambton

Get a complete view of mobile network performance across Lambton with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the Lambton-wide snapshot to understand overall network trends, then dive deeper to compare individual carriers side-by-side and see how each performs in speed, responsiveness, and availability.

Median Performance

Download

46.7Mbps

Upload

2.7Mbps

Latency

49ms

Reliability

2.9/ 10

Top Performers

Best Download: Telus

49.1 Mbps

Best Upload: Telus

2.8 Mbps

Best Latency: Telus

38 ms

Best Reliability: Telus

3.5 / 10

Not enough tests

Network Performance aggregates all measured carriers in Lambton to provide a baseline view of typical speeds and latency in the area. Use these medians as a quick indicator of overall network quality.

Local testing in Sarnia is limited, so these medians are based on data from Lambton. Current medians are 46.7 Mbps download, 2.7 Mbps upload, and 49 ms latency.

Cell Phone Plans for Sarnia

Compare wireless plans from carriers with coverage in this area.

Good2Go Mobile 1GB 12 Months

$5/mo

12 month term

Rogers

1 GB Datahigh-speed, then 128Kbps
No Hotspot Included
Unlimited Minutes
Unlimited Texts

Limited-time offer

50% off for new customers

Good2Go Mobile 1GB 6 Months

$7/mo

6 month term

Rogers

1 GB Datahigh-speed, then 128Kbps
No Hotspot Included
Unlimited Minutes
Unlimited Texts

Limited-time offer

50% off for new customers

Good2Go Mobile 1GB 3 Months

$9/mo

3 month term

Rogers

1 GB Datahigh-speed, then 128Kbps
No Hotspot Included
Unlimited Minutes
Unlimited Texts

Limited-time offer

50% off for new customers

Good2Go Mobile 1GB

$10/mo

Monthly plan

Rogers

1 GB Datahigh-speed, then 128Kbps
No Hotspot Included
Unlimited Minutes
Unlimited Texts

Limited-time offer

50% off for new customers

Good2Go Mobile 3GB 12 Months

$10/mo

12 month term

Rogers

3 GB Datahigh-speed, then 128Kbps
No Hotspot Included
Unlimited Minutes
Unlimited Texts

Limited-time offer

50% off for new customers

Good2Go Mobile 3GB 6 Months

$12/mo

6 month term

Rogers

3 GB Datahigh-speed, then 128Kbps
No Hotspot Included
Unlimited Minutes
Unlimited Texts

Limited-time offer

50% off for new customers

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Cell Coverage in Sarnia: FAQ

What is the best cell phone carrier in Sarnia?

Based on crowdsourced speed tests in Lambton, Telus 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 Sarnia?

We need at least 25 recent speed tests to generate reliable local metrics. Until we reach that threshold in Sarnia, we show performance data for Lambton when it is available.

What is the reliability score?

The reliability score summarizes how dependable mobile performance is in Lambton. 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 Sarnia?

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 Sarnia?

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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View Interactive Map

Explore detailed coverage data for Sarnia on our interactive map.

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