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Cell Coverage in Johnstone, Scotland
Performance by Carrier in Johnstone
Compare real-world download speeds, upload performance, and latency for major carriers in Johnstone — based on millions of crowdsourced speed tests to help you find the fastest, most reliable network.
DownDownload
71.3Mbps
UpUpload
5.3Mbps
Reliab.Reliability
9.0/ 10
40 tests conducted
DownDownload
11.7Mbps
UpUpload
4.6Mbps
Reliab.Reliability
2.7/ 10
24 tests conducted
DownDownload
61.9Mbps
UpUpload
16.1Mbps
Reliab.Reliability
9.4/ 10
75 tests conducted
DownDownload
34.7Mbps
UpUpload
5.4Mbps
Reliab.Reliability
10.0/ 10
50 tests conducted
These results compare 4 mobile carriers measured in Johnstone — Three, O2, Vodafone, EE — 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.
EE delivers the fastest median download at 71.3 Mbps, making it the top performer for raw download throughput. Vodafone 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 Johnstone, Scotland, 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
43.3Mbps
Upload
6.3Mbps
Latency
37ms
Reliability
8.4/ 10
Top Performers
Best Download: EE
71.3 Mbps
Best Upload: Three
16.1 Mbps
Best Latency: EE
35 ms
Best Reliability: Vodafone
10.0 / 10
Based on over 100 speed tests
Network Performance aggregates all measured carriers in Johnstone 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 100 tests. Current medians are 43.3 Mbps download, 6.3 Mbps upload, and 37 ms latency.
Cell Coverage in Johnstone: FAQ
What is the best cell phone carrier in Johnstone?
Based on crowdsourced speed tests in Johnstone, EE 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 Johnstone?
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 Johnstone. 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 Johnstone?
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 Johnstone?
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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