Motion blur not working on dvices

Hi team.
I googled a lot for a suitable and simple answer but I got different responses.
My question is:-
I've added a motion blur effect to my camera (Image Effects class) I've a nice effect on Unity simulator. But when building to an iOS device (iPhone 5) or android one (S3) the effect is not working.

I'm using Unity Pro 3.4.1 why aren't these effects working on the device?

 

Have you selected Graphics level: OpenGL ES 2.0 from player settings?

 

Yes, tried both OpenGL ES 2.0 OpenGL ES 3.0.
Both did nothing.

 

Hello support!!!

 

Thats over 2 years old Unity version? Back then I think you needed to tweak the shaders manually to get some of the image effects to work on mobile.

 

Oops, I'm very sorry.

It's " 4.3.1f1 "

 

BTW, I found this message in both iOS Android devices while building:

Version: OpenGl ES 2.0
.
.
Creating OpenGLES2.0 graphics device.

Now what???