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→iOS and SDK Version Compatibility
== iOS and SDK Version Compatibility ==
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Before attempting to install and run an application on a physical iPhone device it is important to be aware of issues relating to version compatibility between the SDK used for the development and the operating system running on the target device. For example, if the application was developed using version 4.3 of the iOS SDK then it is important that the iPhone on which the app is to be installed is running iOS version 4.3 or later. An attempt to run the app on an iPhone with an older version of iOS will result in an error reported by Xcode that reads “Xcode cannot run using the selected device. No Provisioned iOS devices are available. Connect an iOS device or choose an iOS simulator as the destination”.
The absence in this message of any indication that the connected device simply has the wrong version of iOS installed on it may lead the developer to assume that a problem exists either with the connection or with the certification or provisioning profile. If you encounter this error message, therefore, it is worth checking version compatibility before investing what typically turns into many hours of effort trying to resolve non-existent connectivity and provisioning problems.
== Installing an App onto a Device ==
