How to Change Base SDK on an iPhone
When developing for the iPhone using the Xcode environment, you can set the SDK to compile iOS code for a number of different SDKs that are available. If you want to support as many users as possible, you might want to bump the base SDK down a version or two from the most recent version.
Instructions
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1
Launch your iOS iPhone app project in the Xcode development environment.
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2
Open the project info screen.
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3
Move to the "Build" tab.
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Click the value in the "iOS Deployment Target" field and select the lowest iOS SDK version you want your iPhone app to support.
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Close that box. You've successfully changed the base SDK for your iPhone application.
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