Comparing EE, Vodafone, O2 and Three across 5G · 4G · 3G for the Stevenage (SG) postcode area. Use the scanner below to check your exact postcode.
Ofcom measures EE, O2, Three and Vodafone within 2 points in Stevenage (SG), so no network wins here on coverage. Pick on price — then check your own postcode, because indoor signal still varies street by street.
No network wins Stevenage on coverage. All four are within 2 points of each other in Ofcom's measurements, across 2,021 addresses sampled in 104 postcodes. On a difference that small, EE, O2, Three and Vodafone will all work here — so choose on price, contract length and roaming, not on a coverage map. Coverage only becomes the deciding factor once you leave built-up areas, and it still varies street by street indoors: check your own postcode below to see the measurement for your address rather than for Stevenage as a whole.
Ranked by Ofcom's overall score: O2 100, Vodafone 100, Three 99, EE 98. The spread between best and worst is 2 points, which is inside the margin where a coverage figure stops being a useful tiebreak. Ofcom's data describes outdoor signal across sampled addresses; it cannot tell you how any of them behave inside your own building.
These scores for Stevenage are Ofcom's own measurements, taken from the Ofcom Mobile Coverage API (May 2025 data) across 2,021 addresses in 104 postcodes. They describe outdoor signal at sampled addresses across the whole of Stevenage; signal inside a specific building, and on a specific street, can differ from the area figure.
Every network clears the bar in the SG postcode area, so the honest advice is to stop comparing coverage maps and start comparing prices — the difference between the cheapest and dearest plan will dwarf a 2-point coverage gap. Check your own postcode above first: indoor signal varies street by street even where the area figures match.
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No network wins Stevenage on coverage. Ofcom's measurements rate EE, O2, Three and Vodafone within 2 points of each other here (O2 100, Vodafone 100, Three 99, EE 98 out of 100), which is too close to call a winner. All four will work in Stevenage, so choose on price, contract length and roaming instead.
O2 reaches enhanced (5G-grade) outdoor signal at 100% of the addresses Ofcom sampled in Stevenage, and the other three are within 2 points of it.
Vodafone is the second-best operator in Stevenage with 100/100 overall (100% 5G, 100% 4G).
Stevenage is classified as a suburban area with a population density score of 62%. Mixed areas typically see good 4G and growing 5G from leading operators.
Check mobile coverage for specific postcode districts in Stevenage:
Compare mobile coverage in nearby East of England areas:
