Navigation bar, strange vibrating sound. What could it be?

[Windows Central Question]

Navigation bar, strange vibrating sound

Hey, i bought my lumia 830 about 10 days ago and I noticed that when I press the back key the vibration comes with a strange sound, almost like a whistle... Its pretty annoying and I am wondering if this is a bug which can be fixed or if I should bring it back to the store...??

 

[Loco5150]

Re: Navigation bar, strange vibrating sound

Sounds like a hardware problem. Although this sound should be present with all viration.