Cardboard Sdk work on unity but when builded and installed on phone, cant rotate the scenery

When I used the sdk on unity and run my project, i usually press alt and i can rotate the view of the scene. BUT When i finished building it and installing it on my android phone, cant even rotate the scenery. im really sorry because im just a beginner in here. Please feedback and answer as soon as possible for my project.

Get details answer from here - http://coolexample.in/best-budget-laptops/5593/