How To Recover Deleted Contacts On iPhone 4S Without Backup?

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An iPhone user told me that he lost all his contacts on his iPhone 4S and he did do any backup for those contacts. He wondered whether there is any chance to recover deleted contacts on his iPhone 4S without any backup file. Well, as to this question, I feel sorry for what he had experienced, but meanwhile, all of you should realize the importance of backup your iPhone data with iTunes or iCloud in case of data loss. Also, this user is lucky for there is still a method to recover his deleted contacts even though he had no backup.  Continue reading