s9plus...

[suri81]

LED Notification light for miss calls.. When someone gives miss call it doesn't blink LED light. I also gone for notification setting and I found it there is LED Notification is on but it doesn't blinking. On miss call.... 

[Anonymous]

after miss call you have to wait for few seconds

[suri81]

before update android10 led notification light for miss calls....after update android10 not working

[Anonymous]

then factory reset your device after major updates

[pandey18]

it is not working same issue with my s9plus