iPhone log for actions like deleting text conversations? I recently found one of my long-running text conversations cleared.  I may have deleted it accidentally, but I would like to know when I did.  Is there a system log that logs information at this level?  Maybe in /var/log/ ?
iOS 5 had no such logs that I am aware of. To my knowledge, neither does iOS 6. The system logs record more "important" information regarding system operation and such.