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Search a postcode or postcode area against the current live broadband and mobile coverage seams.

Source: Ofcom broadband and mobile coverage. Coverage: Live connectivity rows matched postcode area S3. Broadband is postcode level and mobile coverage remains area-level only in the current public seam.. Freshness: Broadband year 2024 · Mobile year 2025. Matches: 25.

Postcode	Area	Broadband	Mobile	Freshness
S3 7AA	Sheffield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AD	Sheffield	Broadband coverage is mixed Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AE	Sheffield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AF	Sheffield	Broadband coverage is mixed Gigabit availability is 42.9%, with 42.9% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AG	Sheffield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AH	Sheffield	Strong broadband coverage Gigabit availability is 86.8%, with 86.8% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AJ	Sheffield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AL	Sheffield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AN	Sheffield	Broadband coverage is mixed Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AP	Sheffield	Broadband coverage is mixed Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AQ	Sheffield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AR	Sheffield	Broadband coverage is mixed Gigabit availability is 18.2%, with 18.2% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AS	Sheffield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AT	Sheffield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AU	Sheffield	Broadband coverage is mixed Gigabit availability is 60%, with 60% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AW	Sheffield	Broadband coverage is mixed Gigabit availability is 55.6%, with 55.6% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AY	Sheffield	Broadband coverage is mixed Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7AZ	Sheffield	Broadband coverage is mixed Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7BA	Sheffield	Broadband coverage is mixed Gigabit availability is 33.3%, with 33.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7BD	Sheffield	Strong broadband coverage Gigabit availability is 97.5%, with 97.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7BE	Sheffield	Broadband coverage is mixed Gigabit availability is 50%, with 50% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7BF	Sheffield	Broadband coverage is mixed Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7BG	Sheffield	Strong broadband coverage Gigabit availability is 96.7%, with 96.7% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7BH	Sheffield	Broadband coverage is mixed Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S3 7BJ	Sheffield	Broadband coverage is mixed Gigabit availability is 33.3%, with 33.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 80.6% 4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025

Known caveats

Mobile coverage is still served at area level in the public seam, so treat it as a shortlist signal rather than a street-level verdict.
Connectivity rows do not replace a final provider and address-level availability check before you commit to a property.
If you search a postcode area, neighbouring postcode rows can differ enough that the exact postcode follow-up still matters.

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