Edit Contact Pro - Export Backup Delete Duplicate!

1. Help you to backup/restore/import/export your contacts.2. See example:Number: 0935675680Old Prefix: 0, New Prefix: +84=> New number: +84935675680Number: +84935675680Old Prefix: +84, New Prefix: 0=> New number: 0935675680Number: 0935675680Old Prefix: (Empty), New Prefix: +84=> New number: +840935675680