Best mobile network in AL17 St Albans postcode district

According to Ofcom's December 2024 Connected Nations report, EE scores highest across St Albans. In this suburban area, EE achieves an overall coverage score of 86/100 — driven by strong 5G coverage (74%) and rock-solid 4G at 99%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE consistently leads Three by 5 points overall. While Three reaches 64% on 5G and 97% on 4G in St Albans, 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 St Albans, reaching 74% of premises in AL17. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 99% keeps reliability high throughout.

The runner-up in AL17 is Three at 81/100 (64% 5G / 97% 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.