Broadband and mobile checker

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 S99. Broadband is postcode level and mobile coverage remains area-level only in the current public seam.. Freshness: Mobile year 2025. Matches: 25.
Postcode Area Broadband Mobile Freshness
S99 1AA Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AB Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AD Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AG Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AH Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AJ Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AL Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AN Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AP Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AQ Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AR Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AS Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AT Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AU Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AW Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AX Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AY Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1AZ Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1BA Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1BB Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1BD Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1BE Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 1BF Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 2AA Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 Mobile year 2025
S99 2AB Sheffield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.9% · 5G 80.6%
4G strong-coverage share is 99.9%, with 5G at 80.6% in the current area-level summary.
 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.