I'm interested to know about the effectiveness of the search application on the iPhone home screen.
For example, I have 4 screens of apps and it takes me a few seconds to find an application that I don't use every day. And I know people who have a lot more apps. Some use folders to organize their apps, but manual search becomes longer due to the extra clicks and remember which apps are in which folders.
Are there any studies on this subject? How do other mobile OSs solve the issue of time to find an application on a multi-page home screen?