Ahh ok fair enough! I didn’t even think to try the headphone jack and the sound so I would say you are right! Now just for the issue with the battery draining that bit quicker now days! Hopefully fixed in an updateyes im positive this is a software glitch you can try this yourself.use any headphone and plug it in and the noise is going to the headphone so my theory is just a bug where the haptic vibration together with the noise from the speaker activates at the same time