After changing the card, both Apple mobile phone and vivo can receive SMS at the same time. How to turn it off?

Click Settings -iCloud, and then turn off all options and functions in iCloud that don't need to be synchronized with each other. The automatic download function should also be turned off. Click Settings -iTunes Store and AppStore, and the function of automatically downloading software should also be turned off. Set-message -iMessage, and turn off the function of information synchronization, so that messages will not be synchronized with each other.

It is best not to use ID account, otherwise important data files cannot be backed up independently, and once lost, they cannot be retrieved.

Also, even if * * * uses a file, don't turn on all iCloud synchronization options, otherwise the data information will be synchronized with each other, which will lead to confusion of mobile phone information.