Q1
Best network for CF11?
EE leads with 91/100 — driven by 83% 5G and 100% 4G in this densely populated urban part of Cardiff.
CF11 DISTRICT · CARDIFF
Best mobile network in CF11 Cardiff postcode district
EE scores 91/100 — the top-ranked UK network for CF11 in Cardiff. 83% 5G · 100% 4G coverage. Data: Ofcom Connected Nations 2024.
RESULT · CF11 · CARDIFF
Coverage for CF11 district
★ BEST OPERATOR
EE
91/100
EE delivers the strongest coverage for the CF11 district in Cardiff. Scored across 5G, 4G and 3G using the latest UK operator footprint data.
Full ranking — CF11
#1
EE
#2
Three
#3
O2
#4
Vodafone
Coverage analysis — CF11
Cross-referencing EE, Vodafone, O2 and Three using Ofcom 2024 data, EE comes out on top for Cardiff. In this densely populated urban area, EE achieves an overall coverage score of 91/100 — driven by strong 5G coverage (83%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
EE clearly leads Three by 1 points overall. While Three reaches 81% on 5G and 99% 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.
Why EE for CF11?
EE's 5G rollout in Cardiff is among the strongest nationally, covering 83% of premises in the CF11 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 CF11 is Three at 90/100 (81% 5G / 99% 4G). It is a close contest — both operators deliver strong coverage in CF11, and your choice may come down to tariff, handset preference, or existing contract.
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 — CF11
Q2
Is 5G available in CF11?
EE provides strong 5G coverage at 83%. Three follows at 81%.
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 CF11 (74% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.