Customize Your Android Phone’s Colored LED Notification Light. … It’s a way for Android to communicate information to you even when your screen is off. A blinking blue light may mean you have a Facebook notification waiting, while a blinking red light may mean your battery is low.

What does blue light on Samsung phone mean?

Blue (pulsing): the device is turning on or off. Blue (blinking): there is an unread notification (missed call, message etc.) or during voice recording. Red (glowing): connected to a charger and charging. Red (blinking): connected to a charger but not charging, or when low on battery.

How do I stop the blue light on my Android?

Android Device

You should be able to find the filter under Settings > Display. Look for an option for Night Light or Blue Light filter and turn it on. In most cases there should be a way to schedule the feature and adjust the color temperature to your liking.