About Opensignal

Opensignal is a London-headquartered firm that produces independent measurements of mobile network performance. The methodology is crowdsourced: Opensignal runs a consumer app and partners with other app developers (via SDK) to collect anonymised network-performance data from approximately 100 million devices worldwide.

The aggregated data feeds quarterly reports per major market (UK, Germany, Austria, US, Brazil, India, etc.) ranking operators on multiple metrics: coverage (% of locations with a usable signal), download/upload speed (median throughput), latency (round-trip time), 5G availability (% of time on 5G), consistency (% of measurements meeting a usable-experience threshold), and video experience (perceived video quality).

On SimCompare365, Opensignal data underpins specific factual claims: EE's 80.4% London consistency, Three's 193.3 Mbps London 5G speed, O2's 77.8% London 5G availability, A1 Austria's 8.4/10 coverage score, Magenta's 187.51 Mbps Austrian download, and Drei's 24.86 ms Austrian latency.

Opensignal is widely cited by operators themselves - EE, Three, O2, Vodafone, A1, Magenta, and Drei all reference Opensignal scores in their consumer marketing.