Movement by touch slide

Hello!
I'm try to manipulate my hero in 2D game by touch slide.
What I have done now is:

Code (CSharp):

1. if(touch.phase == TouchPhase.Moved) {
2.   Vector2  touchDeltaPosition =  Input.GetTouch(0).deltaPosition/30;
3.   transform.Translate (touchDeltaPosition.x, 0, 0);
4. }

This code is working fine when I test my game on unity with remote android mobile but when I try to play on my mobile with builded game - it's not working well. I think on each mobile this movement will be different.
What I can do?
Thanks.

 

I really need a help