Xcode No Choice of Devices in Deployment Info Section of Universal App

Question

Just completed converting my first iPhone-only app to a universal app. Began work converting my second iPhone-only app that's been in the app store for some time to universal. Changing Devices from iPhone to Universal under General/Deployment Info section of my target doesn't produce the iPhone and iPad selectors as it did in the first app I converted. I've added a second storyboard and the Main storyboard file base name (iPad) = iPad property to my plist. I need to use two storyboards, and need the iPhone/iPad selectors to appear. I'm using Xcode v7.0. Sorry I can't post a screen shot, as my rep isn't high enough.

Answer 1

In the PBXProject section of project.pbxproj file, there are lines looks like:

        TargetAttributes = {
            XXXXXXXXXXXXXXXXXXXXXXXXX = {
                CreatedOnToolsVersion = 7.1;
            };
        };

If this attribute exists in the project, the Xcode will not display "iPhone" and "iPad" buttons . Just remove these lines, then the buttons will show.

Xcode 6.1 different "deployment info" section for duplicated target