Take the iPhone7 mobile phone as an example, the method of canceling the download APP synchronization is as follows:

First click the "Settings" icon on the mobile phone desktop, as shown in the figure.

Second, then open your own AppleID column to enter, as shown in the figure.

Third, after entering the AppleID, select the option in the red box below to enter.

Fourth, finally turn off the switches of "application", "books and audio books" and "update".