Best mobile network in GU15 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 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 noticeably leads Three by 4 points overall. While Three reaches 67% 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 78 respectively.

EE has made solid 5G inroads across Guildford, reaching 76% of premises in GU15. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 98% keeps reliability high throughout.

The runner-up in GU15 is Three at 83/100 (67% 5G / 99% 4G). It is a close contest — both operators deliver strong coverage in GU15, and your choice may come down to tariff, handset preference, or existing contract.