A free app for Android, by DXIdev.

Can’t seem to make adjustments to your device? It’s high time you download this application. The developers created this tool as vendors hide the Settings shortcut on Android devices, which makes it harder for users to tweak their phones. 

Before using this tool, take note that it will not work if the vendor has removed Settings from your device. Likewise, it will also not work if your phone has the Settings app. When you start the app, a pop-up containing the aforementioned information will appear. Read carefully as the pop-up will no longer appear once you open Settings. The tool works with Android 3.2 and newer.