@biswajitnayak it is possible that this is a bad mic. First you want to try a hard reset of your phone as well. Just make sure that you have backed your pictures and contacts etc. up. You will lose those in a hard reset.
If that did not get any results, you want to check your phone according to the Samsung flowsheet
[image|3051581]
and the [document|31555]
Ultimately, I would replace the charging board since that is where the mic is. At least that way you have a clean, known-well starting point. After that, replace the flex from the charging board to the main board.
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Since iFixit does not have any guides yet, use [https://www.sosav.fr/guides/mobiles/samsung/galaxy-a50/connecteur-de-charge |this one] to work on your phone.
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[image|3051578]
While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.
@biswajitnayak it is possible that this is a bad mic. First you want to try a hard reset of your phone as well. Just make sure that you have backed your pictures and contacts etc. up. You will lose those in a hard reset.
If that did not get any results, you want to check your phone according to the Samsung flowsheet
[image|3051581]
and the [document|31555]
Ultimately, I would replace the charging board since that is where the mic is. At least that way you have a clean, known-well starting point. After that, replace the flex from the charging board to the main board.
[image|3051578]
While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.