How can you ban ppl talking on the mobile here while the authority doing the same?

I got fine for driving while talking while i sweare i never missed using a handsfree in my life. I showed my handsfree to the policeman, and he asked me if i want to pursue it further i need to go to main traffic police in Madinat Khalifa.

So sod them ... i just pay and left ... )(**&^&^%$%^#