Best mobile network in SA6 Swansea postcode district

Comparing Ofcom-verified operator coverage footprints, 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 (67%) and rock-solid 4G at 99%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE comfortably leads Three by 8 points overall. While Three reaches 53% on 5G and 99% on 4G in Swansea, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 73 and 70 respectively.

EE has made solid 5G inroads across Swansea, reaching 67% of premises in SA6. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 99% keeps reliability high throughout.

The runner-up in SA6 is Three at 75/100 (53% 5G / 99% 4G). The margin is noticeable but not enormous. EE edges ahead on 5G depth; if your plan is with Three, 4G performance should still be solid.