Best mobile network in GU9 Guildford postcode district

Cross-referencing EE, Vodafone, O2 and Three using Ofcom 2024 data, EE leads the field in Guildford. In this suburban area, EE achieves an overall coverage score of 87/100 — driven by strong 5G coverage (76%) and rock-solid 4G at 98%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE consistently leads Three by 8 points overall. While Three reaches 60% on 5G and 99% on 4G in Guildford, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 79 and 79 respectively.

EE has made solid 5G inroads across Guildford, reaching 76% of premises in GU9. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 98% keeps reliability high throughout.

The runner-up in GU9 is Three at 79/100 (60% 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.