Can Babylon be used on the mobile side, such as dragging and clicking on the grid with your finger, or moving your finger to change the camera’s perspective
If I understand your question right, then you want to know if you can use BabylonJS on mobile device and then such that the user can interact with the 3D scene using touch input?
The answer is yes and you can try out for yourself with a mobile phone. Go to:
Click on any of the playground example links to see how the different types of camera’s respond to touch.