As the new A4 CPU is rumored to be the next CPU for the 4th generation of iPhones, MobileCrunch ^[1] proposes four more features to transfer from iPad to iPhone:

1. Bluetooth ^[2] Keyboard Support.

Apple iPad ^[3] is claimed to support Bluetooth 2.1 + EDR that lets you connect Apple Wireless Keyboard, wireless headphones or other ^[4] devices. This feature isn't supported yet in iPhones.

2. Desktop file syncing for third party applications ^[5]

Now iPad allows you to drag-and-drop files from computer to the storage folders of third party applications. At one moment you're editing your document on a Mac, and at the second you're viewing it on your iPad.

3. Apps identify themselves as supporting their specific file types.

On the iPhone even if you have installed a specific application ^[6], you will need to find a way to get that file into the application's storage space. On the iPad you can open a file from the desktop or even from an email.

4. PDF Creation Support

There was always a problem of saving files that other people need to see in the friendly format. New iPad has built-in PDF creation functionality for iWork, which is very convenient.

With this improvements iPad can obviously be considered as a sign of innovations to come for the iPhone.