Based on Ofcom's measurements, O2 comes out on top for Shetland. In this remote area, O2 achieves an overall coverage score of 99/100 — driven by excellent 5G coverage (100%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
O2 noticeably leads Vodafone by 2 points overall. While Vodafone reaches 100% on 5G and 100% on 4G in Shetland, it falls short of O2's combined performance across all bands. Three and EE round out the field at 94 and 93 respectively.
In remote areas like Shetland, 4G reliability often matters more than 5G availability. O2 scores 100% on 4G here, making it the most dependable choice for voice calls and data in areas where 5G infrastructure is still limited.
These scores for Shetland are Ofcom's own measurements, taken from the Ofcom Mobile Coverage API (May 2025 data) across 264 addresses in 12 postcodes. They describe outdoor signal at sampled addresses across the whole of Shetland; signal inside a specific building, and on a specific street, can differ from the area figure.