Q1
Best network for TR4?
O2 leads with 100/100 — driven by 100% 5G and 100% 4G in this rural part of Truro.
TR4 DISTRICT · CORNWALL
Best mobile network in Gwennap TR4 · Cornwall
O2 scores 100/100 — the best measured network for TR4 in Truro, 16 points clear of the weakest. 100% 5G-grade · 100% 4G. Ofcom Mobile Coverage data (May 2025), measured across 39 addresses in 6 sampled postcodes.
The TR4 district covers Gwennap, Portreath, Chacewater and Truro, in Cornwall. Signal varies street by street — scan your exact postcode below.
RESULT · TR4 · TRURO
Coverage for TR4 district
★ BEST MEASURED
O2
100/100
O2 has the strongest measured coverage for the TR4 district in Truro, 16 points clear of the weakest network in Ofcom's data.
Full ranking — TR4
#1
O2
#2
EE
#3
Vodafone
#4
Three
Coverage analysis — TR4
Based on Ofcom's measurements, O2 comes out on top for Truro. In this rural area, O2 achieves an overall coverage score of 100/100 — driven by excellent 5G coverage (100%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
O2 comfortably leads EE by 1 points overall. While EE reaches 100% on 5G and 100% on 4G in Truro, it falls short of O2's combined performance across all bands. Vodafone and Three round out the field at 99 and 84 respectively.
In rural areas like Truro, 4G reliability often matters more than 5G availability. O2 scores 100% on 4G here, making it the most dependable choice for voice calls and data in areas where 5G infrastructure is still limited.
Why O2 for TR4?
O2's 5G rollout in Truro is among the strongest nationally, covering 100% of premises in the TR4 district. For anyone streaming video, gaming on mobile, or relying on a mobile hotspot at home, this level of 5G penetration makes a real difference to day-to-day speed.
The runner-up in TR4 is EE at 99/100 (100% 5G / 100% 4G). It is a close contest — both operators deliver strong coverage in TR4, and your choice may come down to tariff, handset preference, or existing contract.
Switching to O2 in Gwennap
O2 has the strongest measured signal here — 100/100, with 100% 5G-grade and 100% 4G coverage across Gwennap, Portreath, Chacewater and Truro, 16 points clear of the weakest. A cheaper plan on a network that does not reach your street costs more than it saves, so start from the coverage and pick the plan second.
Some links on this page are affiliate links. If you switch through one we may be paid a commission. It never changes which network we rank first - that comes from Ofcom coverage data alone.
Explore the Truro area
View full coverage analysis for the Truro (TR) area, or enter any UK postcode in the scanner above for a personalised result.
Coverage FAQ — TR4
Q2
Is 5G available in TR4?
O2 provides excellent 5G coverage at 100%. EE follows at 100%.
Q3
Which network has the best 4G?
O2 leads 4G too at 100%. Reliable 4G is critical in rural areas where 5G hasn't yet rolled out fully.
Q4
Is Vodafone worth considering?
Vodafone scores 99/100 in TR4 (100% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.