Which mobile network is best for the PO3 postcode district?

EE is the best mobile network for the PO3 district in Portsmouth, scoring 93/100 overall with 87% 5G and 99% 4G coverage.

Is there 5G coverage at PO3?

EE provides excellent 5G coverage in the PO3 area at 87%. This is a densely populated urban area, which benefits from high operator investment in 5G infrastructure.

What are the best phone deals near PO3?

Based on coverage for PO3, EE offers the best value combination of signal and deals. Current deals start from £35.00/month. Enter your full postcode on NetScan UK to see personalised results.

How does Three compare to EE in Portsmouth?

Three scores 90/100 in PO3, behind EE's 93/100. Three achieves 81% 5G versus EE's 87%.

PO3 DISTRICT · PORTSMOUTH

Best mobile network in PO3 Portsmouth postcode district

Comparing EE, Vodafone, O2 and Three across 5G · 4G · 3G for the PO3 postcode district in Portsmouth.

RESULT · PO3 · PORTSMOUTH

Coverage for PO3 district

Portsmouth · Densely populated urban density area · PO postcode area

★ BEST OPERATOR

93/100

EE delivers the strongest coverage for the PO3 district in Portsmouth. Scored across 5G, 4G and 3G using the latest UK operator footprint data.

87%

99%

98%

Full ranking — PO3

Overall: 93/100

87%

99%

98%

Three

Overall: 90/100

81%

100%

98%

Overall: 85/100

70%

100%

99%

Vodafone

Overall: 85/100

71%

100%

99%

Coverage analysis — PO3

According to Ofcom's December 2024 Connected Nations report, EE is the clear winner in Portsmouth. In this densely populated urban area, EE achieves an overall coverage score of 93/100 — driven by excellent 5G coverage (87%) and rock-solid 4G at 99%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE comfortably leads Three by 3 points overall. While Three reaches 81% 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 85 and 85 respectively.

Best phone deals from EE

Because signal quality matters most when choosing a phone contract, here are the top EE contracts available now.

Apple Smart Benefits

iPhone 16 128GB

£35.00/mo + £30 upfront

100GB data 24-month contract

View on EE →

Apple Apple TV+

iPhone 16 Pro 256GB

£52.00/mo + £30 upfront

Unlimited data 24-month contract

View on EE →

Apple 5G Stay Fast

iPhone 16 Plus 128GB

£40.00/mo + £30 upfront

250GB data 24-month contract

View on EE →

Apple Best for budget

iPhone 16e 128GB

£25.21/mo + £30 upfront

50GB data 24-month contract

View on EE →

Samsung Free upgrade @18mo

Galaxy S25 256GB

£42.00/mo + £30 upfront

Unlimited data 24-month contract

View on EE →

Samsung Galaxy AI

Galaxy S25 Ultra 256GB

£58.00/mo + £30 upfront

Unlimited data 24-month contract

View on EE →

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 — PO3

Best network for PO3?

EE leads with 93/100 — driven by 87% 5G and 99% 4G in this densely populated urban part of Portsmouth.

Is 5G available in PO3?

EE provides excellent 5G coverage at 87%. Three follows at 81%.

Which network has the best 4G?

EE leads 4G too at 99%. Reliable 4G is critical in densely populated urban areas.

Is O2 worth considering?

O2 scores 85/100 in PO3 (70% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.