Understand what is happening to your connection.

Practical, plain-language guides for Wi-Fi, Internet and mobile connection problems — written to help you find where the trouble starts rather than guess at it.

Troubleshooting guides

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Troubleshooting · 9 minWhy Is My Internet Slow? How to Find Where the Problem Really IsSeparate Wi-Fi, router, provider path, address lookup, congestion and mobile-signal problems instead of guessing from one speed number. Includes a symptom-to-cause table and a step-by-step sequence. User guideHow to run a clean check and read the resultSimple and Technical mode, retesting correctly, history and trends, reports, and an honest account of what the results do not mean.

More guides are being added. If a connection problem is not covered here, get in touch and tell us what you were trying to diagnose.