To resolve the "no connection to server" issue when using the TeleGuard app on your iPhone, follow these actionable steps:

1. Check Your Internet Connection
Ensure that your iPhone is connected to Wi-Fi or cellular data. You can test this by opening a web page in your browser. If you're not connected, reconnect to your network.

2. Restart the App
Force quit the TeleGuard app and then restart it. To do this, swipe up from the bottom of the screen (or double-click the Home button) to access the app switcher, then swipe the TeleGuard app off the screen.

3. Reboot Your iPhone
A simple reboot can sometimes fix connectivity issues. Hold down the power button until you see "slide to power off," then slide it. After a minute, turn it back on.

4. Check for App Updates
Outdated versions of the app may cause connection issues. Visit the App Store and check if an update is available for TeleGuard. Update the app if necessary.

5. Clear App Cache
If the app allows you to clear the cache or local data, use that option found in the app's settings. If this option is not available, uninstall and reinstall the app.

6. Verify Server Status
Sometimes server issues on TeleGuard's end can prevent connection. Check their official website or social media for any announcements regarding server downtime.

7. Reset Network Settings
If you still face issues, consider resetting your network settings. Go to Settings > General > Reset > Reset Network Settings. This will erase saved Wi-Fi networks and passwords, so ensure you have them handy.

8. Contact Support
If none of the above solutions work, contact TeleGuard support for further assistance. They may provide insights if there is a known issue or help you troubleshoot more effectively.

For more community insights and discussions regarding similar issues, you can check out the following links:
- Information on connectivity issues from other users - learn more
- Solutions from tech support discussions - learn more
- General server connectivity troubleshooting guidance - learn more

Following these steps should help you regain connectivity with the TeleGuard app.