Best mobile network in SA4 Swansea postcode district

Drawing on Ofcom Connected Nations 2024 premises coverage statistics, EE scores highest across Swansea. In this mixed urban-rural area, EE achieves an overall coverage score of 83/100 — driven by good 5G coverage (69%) and rock-solid 4G at 98%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE noticeably leads O2 by 9 points overall. While O2 reaches 49% on 5G and 98% on 4G in Swansea, it falls short of EE's combined performance across all bands. Three and Vodafone round out the field at 73 and 72 respectively.

EE has made solid 5G inroads across Swansea, reaching 69% of premises in SA4. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 98% keeps reliability high throughout.

The runner-up in SA4 is O2 at 74/100 (49% 5G / 98% 4G). The margin is noticeable but not enormous. EE edges ahead on 5G depth; if your plan is with O2, 4G performance should still be solid.