Even though the name of the app suggests otherwise, the app will work just fine on the Galaxy S4. So, what all features or settings does the app expose? Quite a lot, actually. A small list of all the settings that the app allows the user to enable are below -:
Add an option to toggle shutter sound in the Camera app Enter key makes a new line in the Messaging app Enable scheduling of messages No limit on joining of contacts No contact name length limit Add exit menu to browser Always request desktop website on stock browser No software update in settings Show hardware revisions in the About device Enable infinite scrolling on the stock launcher Enable rotation control icon in the Gallery app
As mentioned earlier, the app will require root access to allow you access to all the hidden settings, and will only work on the TouchWIZ based ROMs for the above devices. Note 2 Hidden Settings can be downloaded for free from the Play Store.