The trend seems to be that objects should be personalised- mobile phones* are no exception. Customisable faces, 'screen savers', operator logos, and ring tones add style and a wider marketing appeal.
Taken to its logical extreme, mobile phone manufacturers could create a totally modular phone in
the flavour of lego. This would have a number of advantages:
1. the user could personalise it further
2. the same phone could be reassembled to suit different circumstances, eg, a tradesman could have a thick water proof case on the job, and a sleek stylish case when out-and-about.
3. when parts become redundant or break, only the part needs to be replaced.
4. comic possibilities: the phone could be mounted in a shoe.
Being in the form of Lego it is easy to assemble. The mobile phones could be released as an extension of the Mind Storms range. It could even be made to interface somehow with a users existing Mind Storms creations.
[* Sorry, where I'm from, we don't call them cell phones.]