The Notification LED has become a critical alert for any incoming messages without having to physically check the phone every time

But the Samsung Galaxy A Series has done without this. In what looks to be an effort to increase the battery life significantly.

The next question that pops up; Is there an APP that enables the Samsung Galaxy A Series Notification LED?

Well, installing the APP has no effect; since the hardware clearly does not support it. So the answer is a clear NO

For those who consider this a downside; this is going to be a hard pill to swallow