Hi there! I see you're getting an "Invalid response from server" message when using the My TELUS app on your iPhone with iOS 18.6. I want to help you get this sorted out. To start, could you tell me a bit more about what exactly happens? For example:

- Does the error show right when you open the app or after trying to log in?
- Have you tried any troubleshooting steps already?
- Are you connected over Wi-Fi or cellular data when this happens?

Understanding these details will help me guide you best. Meanwhile, here’s a good starting point to try:

1. Check your internet connection: Make sure you have a stable Wi-Fi or cellular connection. Try switching between them if possible.
2. Force close and reopen the app: Swipe up from the bottom and pause to see recent apps, then swipe the My TELUS app off the screen. Reopen it to see if the error clears.
3. Update the app: Go to the App Store, check for any available updates for the My TELUS app, and install them.
4. Restart your iPhone: Hold the side button and either volume button, then slide to power off. Turn it back on and try the app again.
5. Clear app cache/data if possible: Although iOS doesn’t provide a direct cache clear option, uninstalling and reinstalling the app achieves this. You can uninstall by pressing and holding the app icon until options appear, then tap delete. Reinstall from the App Store.
6. Check for iOS updates: Go to Settings > General > Software Update to make sure iOS is current.

If these don’t help, it might be a backend server issue TELUS is working on, as some users have reported similar. Waiting a bit and retrying later can sometimes resolve it as their team fixes things3.

Let me know what you’ve tried and how it went so I can assist you further!

None of these fixes worked

Thanks for letting me know the initial steps didn’t help. Since basic fixes like reinstalling, rebooting, and checking connections didn’t resolve this “Invalid response from server” error, let’s dig a bit deeper.

Here are some more focused steps I recommend:

1. Log out and back in: If you're able to access any part of the app, try logging out completely and then log back in. Sometimes token refresh helps reset server communication issues.
2. Disable Wi-Fi temporarily: Sometimes Wi-Fi networks have settings that interfere with server communication. On your iPhone, turn off Wi-Fi and switch to cellular data, then try the app again.
3. Check your TELUS account online: Visit My TELUS at telus.com on your iPhone browser. Can you log in successfully there? This will confirm if the account itself is working fine or if it’s strictly an app issue.
4. Reset your account password: Sometimes login tokens get stuck or corrupted. Consider resetting your password via the website and then try logging in on the app with the new password.
5. VPN or security apps: Do you have any VPN, ad blockers, or security apps running? These can sometimes block or alter app traffic, causing invalid server responses. Try disabling them if possible.
6. Verify app permissions: Go to Settings > My TELUS app and ensure it has necessary permissions like cellular data access and background app refresh enabled.
7. Check TELUS service status: There could be temporary server issues or outages. You can check TELUS support or social media channels to see if others are experiencing similar problems right now.
8. Contact TELUS support directly: If none of these work, there might be an issue with your specific account or app version compatibility with iOS 18.6. You can reach My TELUS support at [email protected] for specialized help1 2.

If you want, I can walk you through any of these steps in detail. Just let me know! Are you able to access your account through the browser to confirm if it’s app-specific?