iPhone app submission process

I heard that iPhone apps must also run on iPad without modificati开发者_运维技巧ons, at iPhone resolution , and at 2X iPhone 3GS resolution to submit the app to App store. Is that information correction. Do I need to support for iPad(with 2X of iPhone)?

On What things app store mainly concentrate when we submit the application?

Thanks in advance.

Regards, Malleswar

Unless you do something specific or weird to lock out the iPad paradigm or device, a normal iPhone app will run on the iPad in 1X and 2X zoom mode without modification. You can check this with reasonable confidence using the SDK Simulator.

There is a long list in the App Store Review Guidelines on Apple's iOS Developer Portal which lists many of the things that Apple reviews when you submit an app. Read it carefully.

I personally find it exhaustive to read the App Store Guidelines.

I prefer to read the bottom line in places like: Common rejection reasons

It's like the difference between reading a manual and searching the web for answers