How to cancel automatic copying of the same id of Apple mobile phone?

1. Click to set iCloud, and then turn off all the options in iCloud that don't need to be synchronized with each other.

2. Be sure to turn off the function of automatically downloading each other's software. Click Set iTunesstore and AppStore to turn off the function of automatically downloading software from each other.

3. Finally, enter the setting information iMessage and turn off the information synchronization function, so that it will not be copied automatically.