Close all other browser tabs, windows and apps.Ways to make your internet speed check more accurate But using an Ethernet cable to connect your device to the Hub will give you the most accurate broadband speed test results and a faster connection than wireless broadband. Obviously, you can run a WiFi test to check what speeds you’re getting around your home. And if your results vary, don’t worry that’s normal, due to factors such as the time of day and number of devices sharing your broadband when you repeat the internet speed test. If anything, it’s more likely to underestimate speeds – it’s a strict, Ofcom-approved test (other speed checkers may not be). Our broadband speed test is generally pretty accurate and the results are a good reflection of the speeds you were getting during the test.