1. Most users know if their device is operating in S-mode. If not, it can be easy to tell. If you’ve ever seen the screen shown above stating your device only runs verified apps, that’s a telltale sign you’re in S-mode. Otherwise, your version can be identified within Settings on your device. To put it simply: if you have third-party apps on your device that aren’t from the App Store, you’re not in S-mode.