WiFi connection on and off

[LMC1975]

Our WiFi signal keeps going on and off. The internet light on the router goes orange on and off as well. The coverage in part of the house is awful and we end up using 4G in some of the bedrooms as it's quicker, better signal. It's very annoying. Any advice?

[Highlinder]

@LMC1975  First off if you are having drops in your internet connection, have you tried the broadand test to see if an external fault is picked up.

Can you please run the broadband test, this can be done either via the Sky app on mobile data or use the link below.
https://www.sky.com/help/diagnostics/sky-broadband-diagnostic/sky-broadband-diagnostic

If it finds an external fault it should enable you to book an engineer.

As for not having full coverage of Wi-Fi throughout the property then you might need a booster.