Use the Blue Light Filter on Your Galaxy Note5
Use the Blue light filter at night to help you sleep better. You can set a schedule to automatically turn this feature on or off.
The available screens and settings may vary by wireless service provider and software version.
Enable Blue Light Filter
Navigate to Apps > Settings.
Touch Search, and then search for and select Blue light filter.
Choose one of the following options:
Turn on now: touch to enable this feature.
Turn on as scheduled: touch to set a schedule for when Blue light filter should be enabled. You can choose Sunset to sunrise or Custom schedule.
Touch and drag the slider to the left or to the right to set the opacity of the filter.
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