- Check to see if your smartphone is compatible on Google Cardboard’s list.
- If you just installed the Cardboard App, try rebooting your phone.
- When it opens, try double tapping the screen through the intro of the Cardboard App.
- Install another mobile VR app that can be found in the Google Play Store.If that works, then you have not installed the cardboard application properly – uninstall and reinstall the application.
