How works to mix Unreal and Android app built in Android Studio?

Hello!
I built a complete app in Android Studio. But now I need to insert a function to a 3D interactive system.
How works it? Can I build this 3D part in Unreal and save to use in my app? My target is just hit a button like “Load 3D” and load the 3D page. I dont want to apk, one for Android and another to 3D.

Sorry for the basic quastion but thank you for your time.

Hi mate, did you got any information on this question?