You may want to reach out to technical support. That's not a message you should be seeing if you are connecting directly to the Telus router (T3200 or the Smart Wifi Hub). I've never come across a Telus wifi sign in page like what you've described. Which model of router do you have? How is it connected?
How are you trying to connect to your home router from your phone? Are you just going into settings on your phone and selecting the wireless network? Using an app? Typically if you've already entered the wifi password on your phone in wifi settings, it should just automatically connect again once you are back in range.
On the "sign in" page that appears, does it show a webpage address at the top? If yes, what is it?
Are you absolutely sure you're trying to connect to the right wireless network? If you go into the settings on your phone when at home, does the connected wireless network have the correct name?
Are there any other wireless devices in your home? If yes, do they have the same issue? If no, it's likely something with your phone. Try forgetting the saved wireless password/SSID from your phone and then reconnect and enter your wifi password.