I've yet to find an answer to this. My S4 updated to Lollipop today, and now every time I get a new email I get the blue flashing LED light. This despite the fact that I've gone to Settings -- My device -- LED indicator and the notifications check box is NOT checked. I've tried checking it and unchecking, then restarting. Nothing works except when I put the phone into Do Not Disturb mode. Is anyone else seeing this? Honestly, I don't need LED. During the day I either have vibrate or sounds to indicate a new email, and I don't want to waste battery power with a stupid flashing LED that I don't need! Thanks.