Blue Light Filter (Galaxy A40); Dark Mode - Samsung SM-A405FN/DS User Manual

Settings
• S how charging information: Set the device to display the remaining battery percentage
and the estimated time until it is fully charged when the screen is off. (Galaxy A40)
• S creensaver: Set the device to launch a screensaver when the device is charging. Refer to
Screensaver for more information.

Blue light filter (Galaxy A40)

Reduce eye strain by limiting the amount of blue light emitted by the screen.
On the Settings screen, tap Display → Blue light filter and tap the Turn on now switch
1
to activate it.
2
Drag the adjustment bar to adjust the filter's opacity.
3
To set the schedule to apply the blue light filter to the screen, tap the Turn on as
scheduled switch to activate it and select an option.
• S unset to sunrise: Set the device to apply the blue light filter at night and turn it off in
the morning based on your current location.
• C ustom schedule: Set a specific time to apply the blue light filter.

Dark mode

Reduce eye strain by applying the dark theme when using the device at night or in a dark
place.
• T he dark theme may not be applied in some apps.
• Y ou can quickly activate or deactivate dark mode on the notification panel. Open
the notification panel, swipe downwards, and then tap
On the Settings screen, tap Display → Dark mode and tap the Turn on now switch to
1
activate it.
2
To set the schedule to apply dark mode to the screen, tap the Turn on as scheduled
switch to activate it and select an option.
• S unset to sunrise: Set the device to turn on dark mode at night and turn it off in the
morning based on your current location.
• C ustom schedule: Set a specific time to turn on and off dark mode.
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(Dark mode).