Best mobile network in GU4 Guildford postcode district

Comparing Ofcom-verified operator coverage footprints, EE is the clear winner in Guildford. In this suburban area, EE achieves an overall coverage score of 88/100 — driven by strong 5G coverage (77%) and rock-solid 4G at 99%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE noticeably leads Three by 6 points overall. While Three reaches 65% on 5G and 100% on 4G in Guildford, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 78 and 77 respectively.

EE has made solid 5G inroads across Guildford, reaching 77% of premises in GU4. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 99% keeps reliability high throughout.

The runner-up in GU4 is Three at 82/100 (65% 5G / 100% 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.