Phone connections poor

[Ghostbusters12345]

I have 4 mobiles connecting to Wi-Fi , 2 iPhone 2 android. They always have poor connection . Sometime nothing at all and have to switch off Wi-Fi and use mobile data. When I do speed tests they usually show up with normal results . 
Netflix etc on TV seem to work ok as well as laptops . Just seems to be the phones that are the worst. Happens in every area in house too , even right next to router . 

I have tried rebooting router & forgetting Wi-Fi connections on phones and reconnecting . But no luck , is eating all my mobile data . 

any ideas ?

[Greenfingers001]

Hi there, I will escalate this to our community chat for you. Please look out for an email or blue chat bubble. We look forward to speaking to you.

[Tom-W19]

Hi Ghostbusters12345

An invite was sent but there was no response within 48 hours so it has automatically closed.

If you still need help with this please let us know by posting on the forum again and we will get it escalated through to us.

[Sky+mobile+poor]

Service here is abysmal and even Wi-Fi calling is pants, even when next to modem. I daily regret using Sky mobile. It's like the dark ages