The sound on my V 20 phone isn't working when making calls to other people ?

Ever since I plugged in my headphones in the phone the device there no sound talking and the other person can't hear me but the phone makes sounds playing videos and while putting on earphones and on speaker mode the device works fairly decently . Is it a way to fix this by changing a microphone or sound card... show more Ever since I plugged in my headphones in the phone the device there no sound talking and the other person can't hear me but the phone makes sounds playing videos and while putting on earphones and on speaker mode the device works fairly decently .
Is it a way to fix this by changing a microphone or sound card inside the phone to function decently
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