Q1
Best network for PO7?
O2 leads with 100/100 — driven by 100% 5G and 100% 4G in this densely populated urban part of Portsmouth.
PO7 DISTRICT · EAST HAMPSHIRE
Best mobile network in Denmead PO7 · East Hampshire
O2 scores 100/100 — the best measured network for PO7 in Portsmouth, 10 points clear of the weakest. 100% 5G-grade · 100% 4G. Ofcom Mobile Coverage data (May 2025), measured across 85 addresses in 5 sampled postcodes.
The PO7 district covers Denmead, Southwick, Widley and Boarhunt, in East Hampshire. Signal varies street by street — scan your exact postcode below.
RESULT · PO7 · PORTSMOUTH
Coverage for PO7 district
★ BEST MEASURED
O2
100/100
O2 has the strongest measured coverage for the PO7 district in Portsmouth, 10 points clear of the weakest network in Ofcom's data.
Full ranking — PO7
#1
O2
#2
Three
#3
Vodafone
#4
EE
Coverage analysis — PO7
Based on Ofcom's measurements, O2 outperforms rivals in Portsmouth. In this densely populated urban 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 Three by 0 points overall. While Three reaches 100% on 5G and 100% on 4G in Portsmouth, it falls short of O2's combined performance across all bands. Vodafone and EE round out the field at 100 and 90 respectively.
Why O2 for PO7?
O2's 5G rollout in Portsmouth is among the strongest nationally, covering 100% of premises in the PO7 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 PO7 is Three at 100/100 (100% 5G / 100% 4G). It is a close contest — both operators deliver strong coverage in PO7, and your choice may come down to tariff, handset preference, or existing contract.
Switching to O2 in Denmead
O2 has the strongest measured signal here — 100/100, with 100% 5G-grade and 100% 4G coverage across Denmead, Southwick, Widley and Boarhunt, 10 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 Portsmouth area
View full coverage analysis for the Portsmouth (PO) area, or enter any UK postcode in the scanner above for a personalised result.
Coverage FAQ — PO7
Q2
Is 5G available in PO7?
O2 provides excellent 5G coverage at 100%. Three follows at 100%.
Q3
Which network has the best 4G?
O2 leads 4G too at 100%. Reliable 4G is critical in densely populated urban areas.
Q4
Is Vodafone worth considering?
Vodafone scores 100/100 in PO7 (100% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.