Home wifi issue with iPhone

We have high speed with a Telus provided wifi router. The wifi works with any computer we connect with and most other devices such as gaming consoles, smart tv, etc. We have an issue with iPhones however. They connect to the wifi and show full strength, however when attempting to load anything like a website in a browser or a Facebook feed, or pretty much any app, it is either very slow, or stops and says no connection.
We have reset settings on phones, reset router. Tried a wifi extender. Nothing helps. Any thoughts.
Community Power User
Community Power User

Which Telus Router? The new T3200M or one of the older ones?



If you find a post useful, please give the author a "Like"