Just a few things that can affect Wi-Fi in the average home …
Mirrors, furniture, fish tanks, people, radiators, walls (some more than others), cordless phones, baby monitors, microwave ovens, fridges & freezers, TVs, next doors Wi-Fi and Wi-Fi equipment, DAB transmitters, the list is endless.
Many people have accepted that the VM Wi-Fi is poor and have purchased third party equipment that is much, much more powerful than the VM supplied kit and once set up have wondered why they waited for so long.
He'll need to connect with a cable or you need to invest in a mesh system or run a wired AP to improve the WiFi.
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