I created models in C4D and put it in Unity and then put it effects (image effects) then made it APK file.
And moved him to my phone (galaxy s3), then it becomes Slowly.
I did load screen
Mobiles are not as powerful as laptop and desktop computers, so you can’t expect the same results.
You didn’t ask a question, but I’ll assume you want to know how to improve performance? Use the profiler to identify what is consuming resources and processing time.
https://docs.unity3d.com/Manual/MobileOptimizationPracticalGuide.html
https://docs.unity3d.com/Manual/OptimizingGraphicsPerformance.html
http://wiki.unity3d.com/index.php?title=General_Performance_Tips