The mobile app has a main menu to switch between different modes which are listed from top to the bottom. You can select the mode you want to use by touching the icon. The menu will scroll down to show additional modes that do not fit into the screen. The main menu will disappear once you select any mode and the app will enter into the configuration page of that particular mode. You can switch between different modes anytime. In order to do that, you just need to click the arrow icon on the top left-hand side of the screen. When you switch back and forth between different modes, the settings will not change.
When you connect your MIOPS Smart+ through the MIOPS MOBILE app, you will notice a Bluetooth icon with a green tick on the top left-hand side of the screen. This shows that you connected your device successfully. If you click the same icon, you will notice a warning asking if you really want to disconnect from Smart+. You can click "Yes" if you want to disconnect and search for other devices.