In information technology, a backup, or data backup is a copy of computer data taken and stored elsewhere so that it may be used to restore the original after a data loss event. The verb form, referring to the process of doing so, is "back up", whereas the noun and adjective form is "backup".

What does it mean to backup your phone?

Built in to Android is a backup service, similar to Apple's iCloud, that automatically backs up things like your device settings, Wi-Fi networks and app data to Google Drive. The service is free and doesn't count against storage in your Google Drive account.

What does having a backup mean?

Backup is what someone gives when they help or support you. ... Use the noun backup when you talk about extra assistance or help. Police officers call for backup when they're not sure they can handle a situation on their own, and store cashiers need backup when things get busy and customers start lining up.