Q1
Which network is best in Cardiff?
EE scores highest in Cardiff (CF) with 91/100 overall, 84% 5G and 99% 4G coverage.
CF POSTCODE AREA · CARDIFF
Best mobile network in Cardiff CF postcode area
Comparing EE, Vodafone, O2 and Three across 5G · 4G · 3G for the Cardiff (CF) postcode area. Use the scanner below to check your exact postcode.
TOP RESULT · CARDIFF (CF)
Network coverage scores for Cardiff
★ BEST OPERATOR
EE
91/100
EE delivers the strongest mix of 5G, 4G and 3G signal for Cardiff (CF). Coverage scored against the latest UK operator footprints for this densely populated urban area.
Full operator ranking for Cardiff
#1
EE
#2
Three
#3
Vodafone
#4
O2
Why EE leads in Cardiff
According to Ofcom's December 2024 Connected Nations report, EE is the best choice for Cardiff. In this densely populated urban area, EE achieves an overall coverage score of 91/100 — driven by strong 5G coverage (84%) and rock-solid 4G at 99%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
EE noticeably leads Three by 3 points overall. While Three reaches 76% on 5G and 100% on 4G in Cardiff, it falls short of EE's combined performance across all bands. Vodafone and O2 round out the field at 86 and 84 respectively.
Best phone deals from EE in Cardiff
To make the most of your winning network, here are the top EE deals right now.
Coverage FAQ — Cardiff
Q2
Is 5G available in Cardiff?
Yes. EE leads 5G coverage in Cardiff at 84% — rated as strong for this densely populated urban area.
Q3
How does Three compare?
Three is the second-best operator in Cardiff with 88/100 overall (76% 5G, 100% 4G).
Q4
What affects coverage in Cardiff?
Cardiff is classified as a densely populated urban area with a population density score of 88%. Urban areas benefit from high tower density across all bands.