There is a haptic feedback when you touch the navigation touch buttons on HTC 10: Back, Home and Recent buttons. To turn off and disable vibrate feedback of touch button on HTC 10, do as follows:
1. Open the Settings app on your HTC10.
2. Scroll down to the Phone settings and tap to open the Sound & Notification settings
3. Scroll down to the System settings and find the Vibrate on Touch option
4. To disable vibration when touching the navigation buttons, make sure to unamrk the Vibrate on Touch option.