• I have a problem with the sound of the Samsung A71 phone. Especially when calling, I don't hear anyone's voice, nor does the other person hear my voice. But when I turn on the Bluetooth and connect to thehaeadset or car speakers, the problem is solved. Of course, if I reset the phone, I have sound for several hours without any problem.
  This also happens for audio recording; That is, from the moment I no longer have a voice during the call, the voice recorder cannot record any sound. Even movies with sound are played with delays and bugs.

how can I fix this problem permanently?