Best mobile network in SN9 Swindon postcode district

Based on Ofcom Connected Nations 2024 data, EE outperforms rivals in Swindon. In this mixed urban-rural area, EE achieves an overall coverage score of 82/100 — driven by good 5G coverage (66%) and rock-solid 4G at 98%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE noticeably leads O2 by 5 points overall. While O2 reaches 54% on 5G and 99% on 4G in Swindon, it falls short of EE's combined performance across all bands. Three and Vodafone round out the field at 75 and 72 respectively.

EE has made solid 5G inroads across Swindon, reaching 66% of premises in SN9. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 98% keeps reliability high throughout.

The runner-up in SN9 is O2 at 77/100 (54% 5G / 99% 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.