How can Apple phones and Apple tablets be out of sync?

The method of asynchronous data between Apple mobile phone and Apple tablet is as follows:

Close iCloud photo gallery.

On iPhone, iPad or iPod touch, go to settings > [your name ]”>“I cloud”& gt；; Photos, and then open the iCloud photo gallery. In iOS 10.2 or earlier, go to settings > iCloud > photos.

Select the item to cancel synchronization, and then finish.

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