There is an interesting news item at Cellular News describing a recent study of mobile cell phone users and how they are using their phones. Here is a link to the 13-page document referred to in the news item.
The document contains a useful table describing the features most desired by users. Interestingly, some 47% of the users surveyed wanted to have mobile maps as a feature. Another 8% were planning to discontinue using land line phone service in favor of the cellular phone. For anyone with children, it should come as no surprise that 32% of young people felt they could not live without their cell phones. (sigh)
The report also has some very interesting gender based results. Recommended reading!