Whenever I 3D Touch, e.g. on the keyboard or on an icon, I was noticing this bizarre "click" sound right before the 3D Touch haptic feedback. It's noticeable to me in a quiet room while using the phone normally. Turns out it's the SPEAKERS coming on and off very quickly. It's obvious if you hold the earpiece or bottom speaker up to your ear as you do it, which confirmed my suspicion It's rather strange, and I wonder why it does this. It happens on my 7 Plus and my wife's 7. Anyone else notice this?