Can I get some help with a speaker problem?

[AC Question]

Speaker problem!

So I have HTC One mini (M4). And the upper speaker is buzzing when any sound is coming from my phone (music, youtube videos,or chainging the volume). And when i try to call someone the screen freezes and it hapens when someone is calling me too. I have tried factory reset but nothing have chainged.

P.S. - The phone is not rooted.