How to reduce draw calls for efficient 3D model rendering

I have different 3D models which I imported into Unity3D in one Scene. The issue is my application doesn’t give me smooth animation when I play it over mobile devices but it runs really well in my laptop. Can someone please help me out and let me know what steps I need to take in order to make it efficient for the mobile devices. Please note that I marked the objects as “Static” which reduced my draw calls a lot but still the animation is not smooth on mobile devices.

Please let me know.

Thanks