The Xiaomi Mi Band 3 is the fourth Mi Band - there was the Mi Band 1, the Mi Band 1S that introduced a heart rate sensor, the Mi Band 2 that brought the display and now the Mi Band 3. And just like its predecessor, the Mi Band 3 will support raise to wake. It's a simple but powerful feature - raise your wrist towards your face and the screen will light up and show you the time and whatever else you'd like to see. Xiaomi will announce the Mi Band 3 tomorrow alongside the Mi 8, Mi 8 SE and it will probably cost CNY 149 (23). Source | Via
Source: https://www.gsmarena.com/xiaomi_mi_band_3_supports_raise_to_wake-news-31379.php