When Apple says that a redesigned vibrator inside the iPhone 6s and iPhone 6s Plus, branded as the Taptic Engine, gives you “real-time feedback” in the form of subtle taps, the company is not exaggerating. The new oscillating mechanism, now enclosed with its own aluminum shell, reaches its full power in just one cycle (and stops just as quickly) versus ten or more oscillations for most other smartphones.
This allows for a more precise level of haptic feedback to accompany the new Peek and Pop deep-presses provided by 3D Touch. As part of iFixit's detailed teardown analysis of the new iPhones, the repair wizards have blasted the Taptic Engine with X-rays to show it in action.