The Blue light filter decreases the amount of blue light displayed on the screen of the device. Blue light can suppress the production of melatonin (sleep-inducing hormone), so filtering it out can help you sleep better.
Samsung is giving Blue light filter in his all smarphones...
Blue light filter short cut
HOW TO ON SAMSUNG?BLF🛡
.If you do not find short cut for BLF Go to.... SETTING》DISPLAY》》BLUE LIGHT FILTER ✅
SEE THE SCREEN SHOTS..
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