Though phones today have covered many bases Technologically, there are other aspects that have not yet been taken into account. Through surveying/questioning people about the uses of their phone, many people prefer a more practical use from their cellular device.
Here are a few small ideas I had in mind.

Portable/attachable tools and or devices for every day living.
Examples:
-bottle opener
-tool-kit
-pocket knife
-television (or just a TV/internet feature that comes stock with the phone)
-Lighter
-Spare-key holder (miniature compartment for a spare key ~ somewhere on the back of the phone)
Etc~

The option to download books onto a mobile device. (audio or text by payment)
This could save a considerable amount of effort, especially for college students, that is, assuming a user-friendly program were made available with this option.

A universal remote may also be useful doubled with a cellular device. Portable universal remotes are becoming increasingly popular across the US and Japan.

Thank you for your time.