I have a Lenovo P12 with Android. I have installed the HomeAssitant app there. I have also activated full screen mode in the app settings. However, the status bar still remains. It just no longer shows things like the WLAN connection and so on. Is this a bug or am I doing something wrong? It would be nice if the white strip at the top would just disappear in full screen mode.
Fully Kiosk or Wall Panel APK. Switch to using a browser instead of the App.
Fully Kiosk will give you a lot of the information you need on the device if you put the paid version on it.