is there a double tap on screen to unlock/wake feature?
No there isn't, and that is one of the few things I dislike about the Mate 9. The other dislike is that the notification shows numbers instead of the actual icons of the apps, so I have to always pulldown to see what notifications.
Otherwise, the Mate9 is an amazing phone, and I listed over 30 features that make it such an amazing unique phone.
http://musicphotolife.com/2017/01/huawei-mate-9-30-reasons-to-buy/
Some likes:
- wide aperture shooting
- able to adjust bokeh and focus point during editing
- selfie preview window at the corner so the eyes look towards the camera instead of the screen
- homescreen in landscape mode
- fingerprint sensor can slide down notification bar
- knuckle gestures
- screen recording
- dual speaker stereo+
- cancel SMS within 6 seconds after sending
- Wi-Fi+ auto-off WiFi
- customisable power management and background app running
- premium 2-year warranty