Best mobile network in S17 Sheffield postcode district

Cross-referencing EE, Vodafone, O2 and Three using Ofcom 2024 data, EE scores highest across Sheffield. In this densely populated urban area, EE achieves an overall coverage score of 93/100 — driven by excellent 5G coverage (86%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE clearly leads O2 by 6 points overall. While O2 reaches 74% on 5G and 100% on 4G in Sheffield, it falls short of EE's combined performance across all bands. Three and Vodafone round out the field at 86 and 84 respectively.

EE's 5G rollout in Sheffield is among the strongest nationally, covering 86% of premises in the S17 district. For anyone streaming video, gaming on mobile, or relying on a mobile hotspot at home, this level of 5G penetration makes a real difference to day-to-day speed.

The runner-up in S17 is O2 at 87/100 (74% 5G / 100% 4G). The margin is noticeable but not enormous. EE edges ahead on 5G depth; if your plan is with O2, 4G performance should still be solid.