deepal56, May 17, 2019 : I have been using the phone for a day. Ambient display was working perfectly but now it has stopped working. Following are things I tried but got no success: 1. Cleared cache and data followed by restart 2. Turned on the option "Tap the screen to show" followed by restart 3. Turned off the option and restart When receiving notifications also it is not working. *UPDATE* - After few hours having this issue it has randomly started working.