Samsung Galaxy S4 Customer Consultant Manual page 53

Smart Scroll > Smart Scroll doesn't work very well
Part 2 > Q103:
Q : Although I set the Smart Scroll function, it doesn't often work in my Galaxy S4.
Especially during viewing the Internet Web pages, Smart Scroll does not work well. What's the problem?
A : While viewing emails(the body of email messages) or Internet web pages , Smart scroll detects your eyes with the front
camera so you can scroll pages by tilting your head or the device.
The Smart Scroll function supports only with the Samsung Browser(S-browser) not Chrome or download browsers.
Additionally, the feature will work only
recognizes the movement of your face.
Smart scroll may not work in these situations.
- When the front camera fails to detect your eyes
- When the source of light is behind you or when using device in the dark
- When the device is shaking
- When interacting with the device in certain ways, such as using palm
motions, tapping the screen, hovering your hand above the screen,
using multiple windows or pop-ups, etc.
when the signal icon turns green(not in the blue) to indicate that the device
Smart Scroll will work only when the signal icon turns green
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