Q1
Best network for PO17?
O2 leads with 100/100 — driven by 100% 5G and 100% 4G in this densely populated urban part of Portsmouth.
PO17 DISTRICT · FAREHAM
Best mobile network in Wickham PO17 · Fareham
O2 scores 100/100 — the best measured network for PO17 in Portsmouth, 11 points clear of the weakest. 100% 5G-grade · 100% 4G. Ofcom Mobile Coverage data (May 2025), measured across 47 addresses in 5 sampled postcodes.
The PO17 district covers Wickham, Shedfield, Southwick and Widley, in Fareham. Signal varies street by street — scan your exact postcode below.
RESULT · PO17 · PORTSMOUTH
Coverage for PO17 district
★ BEST MEASURED
O2
100/100
O2 has the strongest measured coverage for the PO17 district in Portsmouth, 11 points clear of the weakest network in Ofcom's data.
Full ranking — PO17
#1
O2
#2
Three
#3
Vodafone
#4
EE
Coverage analysis — PO17
Based on Ofcom's measurements, O2 leads the field 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 consistently 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 89 respectively.
Why O2 for PO17?
O2's 5G rollout in Portsmouth is among the strongest nationally, covering 100% of premises in the PO17 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 PO17 is Three at 100/100 (100% 5G / 100% 4G). It is a close contest — both operators deliver strong coverage in PO17, and your choice may come down to tariff, handset preference, or existing contract.
Switching to O2 in Wickham
O2 has the strongest measured signal here — 100/100, with 100% 5G-grade and 100% 4G coverage across Wickham, Shedfield, Southwick and Widley, 11 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 — PO17
Q2
Is 5G available in PO17?
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 PO17 (100% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.