You can delete data and message info easy.
read on page 105 of the 9220 user guide attached here. also you can clear call history as well as the email inbox.
Now for the bad part. ALL email data, text data and call number in and out information is
collected and stored by ALL carriers. Some countries require even more. If for any reason you think it can be simply deleted by the user your wrong. Depending on what your trying to hide or from who , it is all available.
9220 user guide http://btsc.webapps.blackberry.com/b...ListHelperImpl