AFAIK You need to send screenshots for the iPad , even if you are sending the application for the iPhone . I'm talking about itunesconnect while you post. I myself experienced this when I sent the application only for the iPhone and was required to add iPad screenshots.
In particular, for purposes or views in your xcode. NO, you do not need to add additional viewing, but only views for your purpose. If you save a universal application, you can add views for iPhone and iPad .
For different screenshots, you do not need to add different views, but instead you can use the simulator to take all the screenshots.
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