The sound reception is not good like any other mobile of the samsung company the volume of sound is too low that it only heard between 20 meter .the sound of this mobile like a small mobile.It has a main features that was smart bike mode when you are in the bike if any call is come that it should reply that the owner was in the bike and it will send a message with free of cost.
An important thing is the battery power is only 2000mah so if you run internet the battery will end in small time.
So I suggest you that if you want more backup do not buy this.