You can still find the VIO app's installation file (APK) on reputable third-party archives. This allows you to "sideload" the app even if it isn't in the Play Store. Ensure you allow "Install from Unknown Sources" in your phone settings.
While it doesn't use the VIO display, it provides the same high-quality routing and lane guidance on your phone screen.
The VIO relies on the app for traffic data. If your app is still running but traffic isn't updating, ensure your phone's battery optimization isn't killing the VIO app in the background.
While there is no widespread "custom firmware" that turns the VIO into a generic Bluetooth monitor, some advanced users have explored the device's internal architecture.
If you previously downloaded the app, you may find it in your "Purchased" section in the App Store, though this is not guaranteed to work across all iOS versions. Restoring from an old backup is the most reliable way to recover the app on iPhone. 2. Subscription & Connectivity Workarounds