I am about to submit my iPhone app for review. Was just going through the guidelines for approval on https://developer.apple.com/appstore/resources/approval/guidelines.html.
2.10 iPhone Apps must also run on iPad without modification, at iPhone resolution, and at 2X iPhone 3GS resolution
What does this mean? I have not included any iPad feature so far. Nor I have any graphics for iPad. I am not intending to release it for iPad. (not that I want to restrict it, but I never planned it, and I don't think its necessary as far as my app is concerned)
What should I do? Is it mandatory to make it 'universal' app? If yes, what should I ensure? If no, what should I ensure to make sure 2.10 above is met as far as Apple requirements are concerned?