Hi Arne
I am obviously a tech troglodyte and when i tried to do that on the WIFI on my phone I got almost thru it but the red DNS things that I needed to delete were just 0.0.0.0. and when i did that I could not identify any one to replace it with

It may help to explain that I get the WIFI thru our cable NBN network and then a modem and then via a couple of different routers (I tried to modify the setting of the access to one router but maybe I have to modify the router or modem which is well beyond my skill set maybe Andy can try it as he is obviously MUCH more tech savvy than I am