Q1
Best network for PO18?
EE leads with 92/100 — driven by 85% 5G and 100% 4G in this densely populated urban part of Portsmouth.
PO18 DISTRICT · PORTSMOUTH
Best mobile network in PO18 Portsmouth postcode district
EE scores 92/100 — the top-ranked UK network for PO18 in Portsmouth. 85% 5G · 100% 4G coverage. Data: Ofcom Connected Nations 2024.
RESULT · PO18 · PORTSMOUTH
Coverage for PO18 district
★ BEST OPERATOR
EE
92/100
EE delivers the strongest coverage for the PO18 district in Portsmouth. Scored across 5G, 4G and 3G using the latest UK operator footprint data.
Full ranking — PO18
#1
EE
#2
Three
#3
O2
#4
Vodafone
Coverage analysis — PO18
According to Ofcom's December 2024 Connected Nations report, EE scores highest across Portsmouth. In this densely populated urban area, EE achieves an overall coverage score of 92/100 — driven by excellent 5G coverage (85%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
EE comfortably leads Three by 3 points overall. While Three reaches 79% on 5G and 100% on 4G in Portsmouth, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 87 and 85 respectively.
Why EE for PO18?
EE's 5G rollout in Portsmouth is among the strongest nationally, covering 85% of premises in the PO18 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 PO18 is Three at 89/100 (79% 5G / 100% 4G). It is a close contest — both operators deliver strong coverage in PO18, and your choice may come down to tariff, handset preference, or existing contract.
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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 — PO18
Q2
Is 5G available in PO18?
EE provides excellent 5G coverage at 85%. Three follows at 79%.
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 87/100 in PO18 (74% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.