(NEED HELP) M3 Note Speaker Not Working

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2017-01-03 11:00

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I can only hear the sounds (music playback,  ringtones,  incoming calls)  through audio jack / headset.  I have tried some suggestions about how to fix the speaker issue on android phones such as cleaning a stucked audio jack port,  changing the values of audio setting in engineering mode,  and doing the factory reset but none of them seems to work for me.

Kindly share your experience or solved problem if you have one(s).. Thank you