@Sachin biradarpatil: Please try heading to the Samsung Members app > Support (tab) > Phone diagnostics > Mic, then follow the on-screen prompts. Can you hear yourself clearly during the playback of your recording for each microphone? If not, then I recommend arranging for an engineer to inspect your device, as the issue is likely to be hardware related.
With this in mind, please head to samsung.com > Scroll to the bottom of the screen > Contact us, and get in touch via your preferred contact method, and an advisor will be on hand to assist you further.
