If you saved a backup file of your contact list to your smartphone, on a media card, or to your computer using the BlackBerry Desktop Software, you can restore your contact list using that backup file. Depending on your organization, if you previously associated an email address with a smartphone on which the latest version of BBM was installed, you might be able to restore your contact list over the wireless network. 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.