Lighting for smartphone

Hi guys, I hope somebody could help.

I’m building a simple white model with lighting for smartphones applications, however, when I run the file on my phone somehow I don’t get the lighting effect right, it is not as smooth as on the PC (I’m a lighting designer so the light effect has to be perfect). I have read UE4 lighting mobile documentation but I cannot the get it. has anybody experienced this similar situation??

please let me know