Q1
Best network for PO17?
EE leads with 94/100 — driven by 88% 5G and 100% 4G in this densely populated urban part of Portsmouth.
PO17 DISTRICT · PORTSMOUTH
Best mobile network in PO17 Portsmouth postcode district
EE scores 94/100 — the top-ranked UK network for PO17 in Portsmouth. 88% 5G · 100% 4G coverage. Data: Ofcom Connected Nations 2024.
RESULT · PO17 · PORTSMOUTH
Coverage for PO17 district
★ BEST OPERATOR
EE
94/100
EE delivers the strongest coverage for the PO17 district in Portsmouth. Scored across 5G, 4G and 3G using the latest UK operator footprint data.
Full ranking — PO17
#1
EE
#2
Three
#3
O2
#4
Vodafone
Coverage analysis — PO17
Based on Ofcom Connected Nations 2024 data, EE leads the field in Portsmouth. In this densely populated urban area, EE achieves an overall coverage score of 94/100 — driven by excellent 5G coverage (88%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
EE consistently leads Three by 7 points overall. While Three reaches 74% on 5G and 99% on 4G in Portsmouth, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 85 and 85 respectively.
Why EE for PO17?
EE's 5G rollout in Portsmouth is among the strongest nationally, covering 88% 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 87/100 (74% 5G / 99% 4G). The margin is noticeable but not enormous. EE edges ahead on 5G depth; if your plan is with Three, 4G performance should still be solid.
Best phone deals from EE
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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?
EE provides excellent 5G coverage at 88%. Three follows at 74%.
Q3
Which network has the best 4G?
EE leads 4G too at 100%. Reliable 4G is critical in densely populated urban areas.
Q4
Is O2 worth considering?
O2 scores 85/100 in PO17 (71% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.