Samsung Galaxy S4 User Manual page 330

14. Tap Accessibility shortcut to allow you to quickly enable
accessibility features in 2 quick steps. Touch and slide
the slider to the right to turn it on. Follow the on-screen
instructions.
15. Tap the Text-to-speech options field to configure the
text to speech configuration parameters.
16. Tap the Enhance web accessibility field to allow apps to
install scripts from Google that make their Web content
more accessible.
17. Use the Sound balance field to allow you to use the
slider to set the Left and Right balance when using a
stereo device.
18. Tap the Mono audio field to enable stereo audio to be
compressed into a single mono audio stream for use
with a single earbud/earphone.
19. Tap the Turn off all sounds field to mute every sound
made by the device during taps, selections,
notifications, etc..
20. Tap Flash notification to allows you to set your camera
light to blink whenever you receive a notification.
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21. Enable the Assistant menu to allow you to improve the
device accessibility for users with reduced dexterity.
Touch and slide the slider to the right to turn it on.
Follow the on-screen instructions.
22. Tap the Tap and hold delay field to select a time interval
for this action. Choose from: Short, Medium, or Long.
23. Enable Interaction control to allows you to enable or
disable motions and screen timeout. You can also block
areas of the screen from touch interaction. Touch and
slide the slider to the right to turn it on. Follow the
on-screen instructions.