InDefend (Android): Signup for a free account for backup and restore the contacts.
SanDisk Memory Zone (Android): This free app lets you phone's memory card, it moves files you're your phone to memory card and data syncronisation.
Go Contacts Pro (Android): It is an easy to use data backup feature to store your contacts with single VCF file.
Contacts Backup & Restore (Android): A new app to restore and backup your data.
Easy Backup - My Contacts Backup Assistant (iOS): It is suitable for iOS devices to take back-up your contacts.
My Contacts Backup (iOS & Android): A free app solutiont o store local copies of contacts in VCF format.
Lookout (iOS & Android): App with free secured options and stores data.
Contacts Backup (Windows Phone): Free app with simple interface and saves your contacts to VCF file.
Contacts Backup for BlackBerry 10 (BlackBerry): It is also a free app to store and save your contacts in an XML format.
Connected phonebooks (BlackBerry): A free cross platform app like IntouchApp works on android, blackberry and Ios.
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