My player game object (a character controller) is working ok in the Unity editor and it is detecting the collisions with scenery correctly.
When deployed to Android device for testing the character is not detecting some scenery geometry and many times it is falling through the floor (a mesh terrain or another geometry).
The app test is running smoothly in the Android device (about 35-45 fps) so it is not a general performance problem. I have tested it in a Nexus 7 Tablet and in a Samsung Galaxy Note, with Android 4.3 and Android 4.1 respectivelly.
I think it is an issue with the Unity’s physics engine in Android.
Is there any report about this?