3 is one of the 4 major networks we have identified operating in the UK.
Read our latest analyses and insights on mobile network experience in the UK.
Detailed coverage maps for all major networks around the globe are available for free in the OpenSignal app.
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All of the data used in our coverage maps is crowdsourced from our global community of app users, ensuring that the findings we publish reflect the real-world state of mobile network coverage as everyday user typically experience it.