Q1
Best network for CF15?
EE leads with 92/100 — driven by 85% 5G and 100% 4G in this densely populated urban part of Cardiff.
CF15 DISTRICT · CARDIFF
Best mobile network in CF15 Cardiff postcode district
Comparing EE, Vodafone, O2 and Three across 5G · 4G · 3G for the CF15 postcode district in Cardiff.
RESULT · CF15 · CARDIFF
Coverage for CF15 district
★ BEST OPERATOR
EE
92/100
EE delivers the strongest coverage for the CF15 district in Cardiff. Scored across 5G, 4G and 3G using the latest UK operator footprint data.
Full ranking — CF15
#1
EE
#2
Three
#3
O2
#4
Vodafone
Coverage analysis — CF15
Based on Ofcom Connected Nations 2024 data, EE scores highest across Cardiff. 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 clearly leads Three by 3 points overall. While Three reaches 78% 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 83 respectively.
Best phone deals from EE
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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 — CF15
Q2
Is 5G available in CF15?
EE provides excellent 5G coverage at 85%. Three follows at 78%.
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 CF15 (74% 5G, 99% 4G). It may suit certain tariff or price preferences despite trailing the top two.