If you set it to a value higher than what Qt requires and supply your own ist file, you must add an LSMinimumSystemVersion entry to the ist that matches the value of QMAKE_IOS_DEPLOYMENT_TARGET (when using qmake) or cpp.minimumIosVersion (when using Qbs), because iOS (and the App Store) will use the LSMinimumSystemVersion value as the authoritative one. However, you must take care when you manually set your own target version. For the most part, this works automatically. Qt 5 applications can be built for the latest iOS version and deployed to previous versions. If the current device state is Connected, (the traffic light icon is orange), you need to configure the device using Xcode. To view information about the connected device, select Preferences > Devices. When you connect an iOS device to your local machine with USB, Qt Creator automatically detects the device if you have configured it by using Xcode.
For more information about how to acquire and install a provisioning profile, see Apple documentation. Note: If you cannot deploy applications, because a provisioning profile is missing, check that provisioning profiles are listed in Xcode by selecting Xcode > Preferences > Accounts. Your signing certificate is used to sign application packages for deployment to the device. When you run the project, Qt Creator uses Xcode to deploy the application to the device. Usually, you can use the default settings.
The next time you connect the device, Qt Creator detects it automatically. The first time you connect the device to your local machine, you are asked to enable developer mode on the device. The certificate is copied to the device when you configure the device. The connections between Qt Creator and an iOS device are protected by using a certificate that you receive from Apple when you enroll in the Apple Developer Program. You can install them as part of Qt 5.2, or later. You only need Qt libraries that are built for iOS. Qt Creator automatically detects the tool chain and creates the necessary kits to build applications for and run them on configured iOS devices. To be able to use Qt Creator on macOS, you must install Xcode, and therefore, you already have the tool chain for building applications for iOS. You can connect iOS devices to your local machine with a USB cable to run applications built for them from Qt Creator.