Does Ookla Speedtest lie?

Many experts claim HTML5-based speed tests are more accurate than tests that use Java and Adobe Flash. Others point out that multithread tests such as those used by Ookla (Speedtest.net and branded by many ISPs) don’t represent real-world network traffic as well as single-thread tests .

Speedtest measures the speed between your device and a test server, using your device’s internet connection. Several factors involved in the test can result in unexpected speeds . Devices (phones, tablets, PCs, etc…) can have very different Wi-Fi and cellular radio capabilities.

Speedtest is measuring your real-time network connection , so tests taken within a few minutes of each other might vary a little based on network congestion and available bandwidth.