About synchronisation and reconciliation
The wireless data synchronisation feature is designed to synchronise organiser data (contacts, calendar entries, tasks and memos) between your BlackBerry smartphone and the email application on your computer over the wireless network.
The wireless email reconciliation feature is designed to reconcile email between your smartphone and the email application on your computer over the wireless network. When you file or delete email messages on your smartphone, these email messages should be filed or deleted in the email application on your computer. Likewise, any changes that you make to email messages in the email application on your computer should be reflected on your smartphone.
In rare cases, if your smartphone doesn't recognise fields in a contact, calendar entry or email account, some data or email can't be synchronised or reconciled.
If wireless data synchronisation isn't available on your smartphone or if you turned off this feature, you can use the BlackBerry Desktop Software to synchronise your organiser data. For more information, see the Help in the BlackBerry Desktop Software.
Research In Motion recommends that you regularly create and save a back-up file on your computer, especially before you update any software. Maintaining a current back-up file on your computer might allow you to recover smartphone data if your smartphone is lost, stolen or corrupted by an unforeseen issue.