My internet connection to keeps saying connected without internet

[VIIII]

I'm connected to my WiFi through my Samsung phone and ever 8-10 mins on average but could occur every 2-3mins??

I've reset the router. Didn't work

Turned it off by the wall. Didn't work straight away but did come on, but went back off again. I reset my phone, it connected  for 20mins or so but keeps saying connected without internet.

I signed into MySKY and run the tests and it's showing everything fine? Could someone help please.  Kind regards

[JimM1]

@VIIII What do you see on the hub or the ONT if you have a FTTP Connection!

This link providers information about the coloured lights on the various hubs
https://www.sky.com/help/articles/hub-lights-explained-start