Troubleshooting
Slow internet, drop-outs, high ping, throttling, LOS light: step-by-step diagnosis and fixes.
- Slow internet: 12 common causes and how to fix them
Slow connection? A step-by-step method to find the cause (Wi-Fi, router, device, line, peak hours) and fix it, with a speed test at each step.
- Fibre slow on Wi-Fi but fast on cable: why, and how to fix it
Your fibre reaches full speed over Ethernet but not over Wi-Fi? The real limits of Wi-Fi, normal speeds by device and 8 practical fixes.
- Slow ADSL: 9 tips to improve your speed
Is your ADSL slow? Filter, socket, extension, sync rate, interference: the checks that really gain speed, and when to switch to fibre.
- Frequent internet drop-outs: diagnosis and fixes
Internet cutting out several times a day? Find out whether the cause is Wi-Fi, the router, the fibre or ADSL line, or the network, and what to do in each case.
- Lower your ping for online gaming: 10 effective methods
Lag, high ping, jitter in games? 10 practical ways to reduce latency on PC, console and mobile: cable, QoS, servers, Wi-Fi and bufferbloat.
- Red LOS light on a fibre router: causes and what to do
Red or blinking LOS light on your fibre router or ONT? What loss of optical signal means, the checks you can do yourself and when to call your provider.
- Why internet speed drops in the evening (and how to check)
Fast in the morning but slow at night? The causes: household use, neighbours' Wi-Fi, network or 4G cell congestion. A method to find out for sure.
- Is my ISP throttling my internet? How to check, step by step
Streaming buffers but speed tests look fine? Learn how to tell ISP throttling from congestion or Wi-Fi problems, with free tests and what to do next.
- Wi-Fi connected but no internet: 10 fixes that work
Your device shows Wi-Fi connected but no internet? Find out whether the router, the line or the device is at fault, and fix it step by step on Windows, Mac, Android and iPhone.
Understanding your connection Wi-Fi and equipment Mobile, 5G and satellite