Hey all you AusAnons and KiwiAnons out there.
After a lot of messing about re changing the DNS on an iPhone that was fine about the house but NOT fine when using the cellular network as IOS will not allow changing that unless you jailbreak which I wasn't interested in, I've found a terrific app we can use.
On the App Store and Google Play search 1.1.1.1 faster internet. It's free and brilliant!!!