Although this was tested on the Oneplus 6T, it should work for most Android Oreo and later phones.
So I was annoyed that I don’t have an LED notification light on the OnePlus 6T and tried to make one of my own. With phones that have an AMOLED screen, each time a desired notification arrives, the application displays a black screen with an animation that looks like notification LEDs.
+ Change LED animation time.
+ Change LED colors.
+ Change the position of the LED.
+ Notify missed calls.
+ Resize LED (Premium required!)
+ Add downtime
And many more …

Supported Android
(4.1 and up)
Oreo (8.0-8.1), Pie(9.0)

Download NotifyBuddy AMOLED Notification Light 1.92 Premium APK Mod Extra

NotifyBuddy-Premium-v1.92_build_123-Mod.apk