Best mobile network in SG6 Stevenage postcode district

According to Ofcom's December 2024 Connected Nations report, EE comes out on top for Stevenage. In this suburban area, EE achieves an overall coverage score of 86/100 — driven by strong 5G coverage (74%) and rock-solid 4G at 98%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE noticeably leads Three by 5 points overall. While Three reaches 63% on 5G and 100% on 4G in Stevenage, it falls short of EE's combined performance across all bands. Vodafone and O2 round out the field at 79 and 78 respectively.

EE has made solid 5G inroads across Stevenage, reaching 74% of premises in SG6. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 98% keeps reliability high throughout.

The runner-up in SG6 is Three at 81/100 (63% 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.