Hey there! I understand you're experiencing a frozen screen with the Signia App on your iPhone. Let's work through this together.

First, could you let me know if the screen freezes immediately when you open the app, or does it freeze after you try to perform certain actions? Also, have you tried restarting your device or closing and reopening the app?

In the meantime, here are a few steps that can help:

1. Force Close the App:
- Swipe up from the bottom of the screen (or double-click the Home button if your iPhone has one) to see all your open apps.
- Find the Signia App and swipe it up to close it.
- Then, reopen the app to see if that resolves the issue.

2. Restart Your iPhone:
- Hold down the power button and slide to power off.
- Once it’s off, turn it back on and see if the app works properly.

3. Reinstall the App: If the issue persists, uninstall and then reinstall the Signia App. This step can help remove any corrupted files or settings that may be causing the problem:
- Press and hold the Signia App icon on your Home screen.
- Tap "Remove App" and then "Delete App."
- Go to the App Store, search for the Signia App, and reinstall it.

4. Check for Updates: Ensure that both your iOS and the Signia App are updated to the latest versions.

Please give these a try and let me know how it goes! If the app continues to freeze, we can look into further troubleshooting steps.