iPhone 7 incall Mic problems


I recently started having problems with incall microphone. I tested microphone with siri, voice memos, video recording and there was no problem with microphone. When i make a phone call nobody hears me, not even over fb messenger or facetime. That started to happen after i downloaded discord. I dont know what to do, tried restoring without using backup, installing older and newer ios(including beta 11 and 10.3.3 beta 3) and nothing helps. I dont want to send it to service since i think it is a some kind of software issue and not hardware if it works in voice memos and video record…

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