Which mobile network is best for the CF3 postcode district?

EE is the best mobile network for the CF3 district in Cardiff, scoring 93/100 overall with 86% 5G and 100% 4G coverage.

Is there 5G coverage at CF3?

EE provides excellent 5G coverage in the CF3 area at 86%. This is a densely populated urban area, which benefits from high operator investment in 5G infrastructure.

What are the best phone deals near CF3?

Based on coverage for CF3, 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 Cardiff?

Three scores 90/100 in CF3, behind EE's 93/100. Three achieves 81% 5G versus EE's 86%.

CF3 DISTRICT · CARDIFF

Best mobile network in CF3 Cardiff postcode district

Comparing EE, Vodafone, O2 and Three across 5G · 4G · 3G for the CF3 postcode district in Cardiff.

RESULT · CF3 · CARDIFF

Coverage for CF3 district

Cardiff · Densely populated urban density area · CF postcode area

★ BEST OPERATOR

93/100

EE delivers the strongest coverage for the CF3 district in Cardiff. Scored across 5G, 4G and 3G using the latest UK operator footprint data.

86%

100%

Full ranking — CF3

Overall: 93/100

86%

100%

Three

Overall: 90/100

81%

100%

98%

Overall: 87/100

74%

100%

99%

Vodafone

Overall: 84/100

69%

99%

98%

Coverage analysis — CF3

Based on Ofcom Connected Nations 2024 data, EE is the clear winner in Cardiff. In this densely populated urban area, EE achieves an overall coverage score of 93/100 — driven by excellent 5G coverage (86%) 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 81% on 5G and 100% on 4G in Cardiff, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 87 and 84 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 Cardiff area

View full coverage analysis for the Cardiff (CF) area, or enter any UK postcode in the scanner above for a personalised result.

Coverage FAQ — CF3

Best network for CF3?

EE leads with 93/100 — driven by 86% 5G and 100% 4G in this densely populated urban part of Cardiff.

Is 5G available in CF3?

EE provides excellent 5G coverage at 86%. Three follows at 81%.

Which network has the best 4G?

EE leads 4G too at 100%. Reliable 4G is critical in densely populated urban areas.

Is O2 worth considering?

O2 scores 87/100 in CF3 (74% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.