A synchronization conflict occurs when you change the same email or organizer data item on your BlackBerry smartphone and in the email application on your computer.
If you reconcile your email using wireless email reconciliation, on your smartphone, you can set whether the email on your smartphone or the email on your computer takes precedence when an email reconciliation conflict occurs.
If you synchronize your organizer data using wireless data synchronization, the organizer data on your computer takes precedence over the organizer data on your smartphone when a data synchronization conflict occurs.
Research In Motion recommends that you regularly create and save a backup file on your computer, especially before you update any software. Maintaining a current backup file on your computer might allow you to recover smartphone data if your smartphone is lost, stolen, or corrupted by an unforeseen issue.