It does everything a 10 year old pda can do. It is not a cell phone and it is not a smart phone. It keeps calendar, contacts, takes down messages and doodles. Has a word processing program and a spreadsheet. Only problem I can tell you about is that the battery is 10 years old and doesn't hold a charge very long.
That happens with this one. However, it has software to sinc it with your pc contacts, etc. I think you could just continue to sinc it anytime you lose the contacts because the battery died. Or you could get a new battery.