Find iPhone Lost Call History After Update To iOS 8.4

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Have you got the trouble: when you update your iPhone to iOS 8.4 and you just find that your call histories are all lost. You need to find and get them back but you don’t want to reset your iPhone and then restore the whole backup to your iPhone. You just want to selectively restore lost call histories. What to do to make it after update iPhone to iOS 8.4?  Continue reading