Slight buzzing noise from iphone 16 base model after update 18.6.2

I purchased my iphone 16 almost 2 weeks ago and it was fine and there cannot be any hardware issue since it was fine until this 18.6.2 update, my sister also have a Iphone 16 base model but she didn’t updated her phone and I compared my speaker to her with same music and mine producing a buzzing noise but her phone's speaker is fine and its not in every audio or music , some audios its is fine but in some it is producing that noise