Q: Problem in sound calls

Hello mh.habibi,

I understand when on a phone call you can hear the other person fine bet they often can't hear you. You also reinstalled the iOS and that helped for a while but the issue came back.

You can test if it's a microphone issue by testing with other sound or recording apps.

Please see

Get help with the microphones on your iPhone, iPad, and iPod touch - Apple Support

For example, it suggests trying the Voice Memos app to record yourself then play it back.

There's also a "Get help" section for further troubleshooting.

Let us know how it goes.