TR4 DISTRICT · CORNWALL
Gwennap mobile coverage Three 28% indoors here, 74% across Truro TR4 · Cornwall
O2 has the best measured coverage in TR4: 100/100, 16 points ahead of Three on Ofcom's overall score, with EE within 1 point.
TR4: Gwennap, Portreath, Chacewater, Truro, Kenwyn, St. Erme, St. Agnes, St. Allen (Cornwall).
TR4 scores
#1
O2
#2
EE
#3
Vodafone
#4
Three
Ofcom Mobile Coverage data (May 2025), measured across 39 addresses in 6 sampled postcodes: TR4 8HE, TR4 8HZ, TR4 8JF, TR4 8PL, TR4 8UN, TR4 9EW. Methodology.
How TR4 compares
Against the Truro average
- Three indoors: 28% here, 74% across Truro (−46).
- O2 indoors: 100% here, 92% across Truro (+8).
Weakest spot in Truro: TR5 St. Agnes, where Three reaches 0% indoors.
Indoor signal around TR4
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| TR4 Gwennap (here) | – | 95% | 100% | 28% | 95% |
| TR5 St. Agnes, Perranzabuloe | 5 | 94% | 97% | 0% | 100% |
| TR6 St. Agnes, Perranzabuloe | 6 | 100% | 100% | 100% | 100% |
| TR1 Truro, Kenwyn | 6 | 100% | 100% | 100% | 100% |
| TR3 Feock, Gwennap | 8 | 100% | 97% | 97% | 99% |
| Truro average | – | 94% | 92% | 74% | 90% |
Biggest difference nearby: Three on 5G-grade outdoor signal, 85% here and 22% in TR5 St. Agnes, 5 km away.
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