Retrieve Lost WeChat Data From iPhone Update To iOS 10

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As iOS 10 is going to be released next Wednesday, along with iPhone 7, the most important thing for iPhone users is to keep data safe during the update to iOS 10.  It is quite common to lose some data from iPhone like wechat messages, contacts, notes, etc, from iPhone when it refers to iOS update. So is there any way to retrieve lost wechat data from iPhone update to iOS 10?  In short, the easiest way to recover lost wechat data from iPhone due to iOS 10 update is to restore from iTunes o...
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