Radyr mobile coverage Within 8 points of the Cardiff average CF15 · Caerphilly
No network wins CF15 on overall coverage: all four are within 1 point, but indoors EE, Three and Vodafone reach 100% of sampled addresses and O2 93%.
CF15: Radyr, Pentyrch, Tongwynlais, Energlyn, Taffs Well, Morganstown, Llantwit Fardre, Pontypridd Town (Caerphilly, Cardiff, Rhondda Cynon Taf).
CF15 scores
Ofcom Mobile Coverage data (May 2025), measured across 70 addresses in 4 sampled postcodes: CF15 7PJ, CF15 8FP, CF15 8LQ, CF15 9HH. Methodology.
How CF15 compares
Every network here is within 8 points of the Cardiff average and of CF14 Heath, CF5 Radyr, CF11 Canton and CF10 Splott, indoors and outdoors.
Indoor signal around CF15
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1pMobile runs on EE's network: £5 a month for 5GB (read 19 October 2026). A price, not a coverage ranking: Ofcom separates no network here.
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