Apple products are intuitive and easy to use. They have proven that user experience is a primary quality. Quality made Apple the best brand in the world.

However, there are still usability issues in Apple products. For instance, the multi-touch functionality is not consistently applied across all applications. It is also underused in many applications.

For example:

• When reading a Kindle book on iPad, you can « flip » the pages by dragging your finger across the screen, but you cannot drag your email page on your iPhone or iPad.
• On iPhone you can zoom the opened email page using multi-touch, but you cannot zoom the page of email inbox

Users expect to interact with the iPhone or iPad using the same actions. Hence we see that even the best can improve.

About usability improvements and problems of iPad , go to:

http://www.useit.com/alertbox/ipad.html