Compare the same thing
Use the full postcode and distinguish indoor from outdoor results. Compare the provider’s current checker with Ofcom Map Your Mobile. A population coverage claim does not answer the question for one room.
Test where life happens
Consider home, work and the regular journey separately. Record the room and time, whether a call completes and whether data loads. Avoid judging a network only from a speed test beside a window.
Understand the obstacles
Dense materials, terrain and busy-hour demand can influence performance. A strong signal indicator does not guarantee available capacity or a stable application connection.
Use evidence in a report
For a persistent fault, supply the provider with dates, locations and symptoms through its own channel. Keep personal information away from public pages. We cannot promise a coverage improvement.
Continue with the source
Primary referenceRead current provider terms before making an account or service change.