How to Turn on Blue Light Filter (only Way)

How to Put a Blue Light Filter on Iphone - Step by Step

Reduce your phone's blue light, protect your eyes, and relieve eye fatigue! Make it easier for you to sleep. | Blue Light Filter | Facebook

To all night owls out there! The glare from your phone can strain your eyes and keep you up at night. Use the built-in blue light filter on your Galaxy smartphones if you must use your phone before bedtime. It is less strenuous on your eyes. Say #nowIknow if you never knew about this feature! | Samsung

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