Describe what your OCs phone would be like, in however much detail you desire.
datapads are probably the more common thing to carry around with you (if anything - portable computers aren't that common in the Core, usually just public or home terminals)
kauko's is definitely "organized" in that way where you start a system for it and then later are just lumping other things into the existing system, and then you get annoyed so you go and start revamping to a new system but haven't figured everything out in advance so it's now just kind of half and half
so they just use search for everything instead of actually using a real organization structure
no contact book (and never makes calls), just digs through conversation history to pull addresses when they want to send something to someone