doc/docs/en/shared/android-faq.md

Q: Is it possible to hide the navigation and status bars on Android?

A: Yes, set the immersive_mode setting in the Android section of your game.project file. This lets your app take over the whole screen and capture all touch events on the screen.

Q: Why am I'm getting "Failure [INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES]" when installing a Defold game on device?

A: Android detects that you try to install the app with a new certificate. When bundling debug builds, each build will be signed with a temporary certificate. Uninstall the old app before installing the new version:

$ adb uninstall com.defold.examples
Success
$ adb install Defold\ examples.apk
4826 KB/s (18774344 bytes in 3.798s)
      pkg: /data/local/tmp/Defold examples.apk
Success