why unity main screen getting jerk on application opening in unity5.0 ?

hi
when i am opening my app in device it flicks.
This things only happen in unity5.0.

Is it unity5.0 bug ?

I have developed just a scene with a cube in and made apk file.when i am opening that apk in device it flips. I have tested this in different unity version. And also developed in different individual project.
But still i am getting this issue.

If you do no believe you can try it.
Make a scene with any object render it in camera.
When you will open apk file it will getting jerk on start up.

Please help me.

finaly got it.
it happens when we are using device like moto e, moto g .
Motorola mobile device contains onscreen button of back and home. so when unity try to maximize your screen it will flik.