Prithuraj , via OnePlus 7T , Jan 18, 2020 : Hi guys I have found a workaround for fixing the above issue. 1.Turn off tap to show and lock the screen 2. Send a text message or something so that the Amoled screen notification shows up. 3. Now turn on the tap to show screen and lock screen. 4. Tap the screen and this should work. Hit the like if this worked for you guys [e]1f603[/e] Fix #2: 1. Turn off all the options in ambient display and wait for an hour 2. Continuously toggle alert slider when screen is turned off. 3. after few tries you shybe able to see notification on ambient display.