Hi there! I understand you're experiencing some trouble with the Vivint phone app. Let's get this sorted out together. Could you let me know what specifically is happening? For example, is the app not opening at all, or are you encountering an error message when you try to use it?

In the meantime, here are some general troubleshooting steps you can try:

1. Restart the App: Close the app completely and reopen it.
2. Log Out and Back In: If restarting doesn't help, try logging out of your account in the app and then logging back in.
3. Check Your Internet Connection: Ensure that your device is connected to a stable Wi-Fi or data connection.
4. Reinstall the App: If the app still isn't working properly, uninstall it from your device and then reinstall it from the app store.

If these steps don't resolve the issue, please let me know exactly what you see, and we'll dive deeper into it.