changing camera position works fine in PC but not in android build

on button click function i changed the rotation of third person player.there is a target point at the back of player and camera is set to lookAt that point every works fine in PC but when build for android .on button click it changed the player rotation but the camera does not update.i have to touch the screen then the camera movement updates.I have put this line Camera.main.transform.lookAt(target) in update function but it did not work for android .what is the issue?

Hi, I probably get the same problem. Did you find any solution?