S View works with flip cover (with windows) , whenever cover is closed View Screen comes up and shows following information:

Displays:

-*- Caller ID Screen (During incoming call)

-*- Time, Date & Day

-*- Unattended Messages and Missed Calls

-*- Music Title

-*- S View Logo / Custom text

Other Features:

-*- S View automatically disables itself when phone is in landscape mode (playing games, watching videos etc)

-*- Status Bar Notification for View control (Added in Main Screen Menu)

S View App Information Guide

Main Screen consist of three buttons:

-Start Service

-Customize

-Settings

-Start Service :
Start S View service on/off using this button, apart from this button
you can also start/stop service using status bar notification, that can
be turned on using Main Screen Menu.

-Customize : You
can change the position of layouts according to your case,
customization helps you to move layouts up/down/right/left. Click on one
of the two layouts and use arrow keys to move them, press save to Save
position.

-Customize(In Pro Version Ony) :
Same as free version with addition to font customization, you can
change font size and color using it. Click on one of the two layouts and
press Edit to edit the selected layout.

-Settings:

-Delay
Time: Choose delay time, it will trigger the app ON after selected time
delay, this feature prevents mistake in triggering S View.

-Auto Wake Up (Beta): Turns on the screen when cover is opened, does not work on some devices.

-Use S View Caller ID: Use S View Caller ID to accept or reject call, or use default Caller ID screen.

-Settings(addition to free version):

-Hide S View logo from View Screen

-Hide Notifications from View Screen (messages/sms icons & count)

-Display Music title: Shows currently playing music (only support default music player)

-Next Important Updates:

-*- Triggering View using magnetic sensor, for users having flip cover with magnet.

-*- Customizing Caller ID Screen.

Ofcourse My Miui Followers i dont know where you can purchase S-View Cover for every phone but i know it work

on any galaxy phone with s-view cover even not original ones