Characters working in editor but not on build

My game works perfectly fine
with animations and response to user input on the unity editor and upon
building to the android platform, there are no errors. However, once i
install it into my samsung galaxy pocket, the character models become
completely motionless, neither responding to user touch input nor even playing
the idle animations. They are completely frozen but the gui still works
fine. What could be the problem? Thanks.

There might be a problem with the quality settings. It could be that your quality is set so low that it only allows animation of a single bone, the root bone. See Blend Weights. Unity - Manual: Quality

animator = GetComponent();//use it in your move function.