1. Find "iCloud Backup"
Press your Apple ID.
Press iCloud Backup.
2. Turn on automatic iCloud backup
Press the indicator next to "iCloud Backup" to turn on the function.
The phone memory will be backed up automatically when your phone is charging, the screen lock is turned on and a Wi-Fi connection is established.
3. Back up phone memory to iCloud
Press Back Up Now and wait while the phone memory is backed up.
4. Return to the home screen
Press the Home key to return to the home screen.