Speaker issue on S9.

[mitron56]

Does anyone's S9 vibrate when playing music at high volume, particularly at the center portion of the backside? 

My phone has been vibrating at the back when playing anything at high volume but I don't have any way to compare with other phone. 

Any advice would be welcome.

EDIT- It's only the top speaker causing vibration, I tried playing a stereo sound and only the earpiece causes vibration. Is it normal?

[Hraen]

No idea

[vivak1]

No idea

[vivak1]

No idea

[avi1122]

check the auto haptic option in accessibility/hearing

[mitron56]

Can't find this option.

[avi1122]

This feature is installed in Android to help people with hearing impairment to perceive music better by the vibrating phone

[mitron56]

Cannot find this option. Any help?

[deep19]

No idea

[avi1122]

does it normal vibration or like any vibration of part moving

[avi1122]

 But that should be expected. Kind of like when you playing your house stereo loud and be in another room and put your hand on the wall and can feel the vibration.