Smartphones should always be backed up just like computers. After all, they store a large amount of important data, including all your contacts! Losing your phone to theft, misplacement, or to damage, would mean the loss of valuable information if you don’t have it backed up.
When a phone is lost or damaged, you can lose not only your personal contacts, but your photos, videos, call history, text messaging, personal application settings, as well as short reminders or notes that you may have saved on your phone.