Sharp AQUOS Crystal - Manual (Page 82)

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Backing Up Contacts to SD Card
Back up (save) contacts to SD Card.
・Another device may be unable to correctly import contacts
data backed up with handset.
In app sheet, (Basic) (Address Book)
Address Book opens.
Settings/manage
Export to storage
Enter Operation Password OK
Backup (no image) / Backup (image)
Backup is complete.
・If confirmation appears, follow onscreen prompts.