What information can be synchronized by logging into different computers with the same account in the MAC system?

The phone book, call history, text message content will be synchronized, and the content in Facetime will also be synchronized; the downloading software will synchronize the download of photos, address books, videos, etc., but the browser will not synchronize

How to cancel out of sync:

1. Click iPhone Settings - iCloud, and then in iCloud, turn off all options that do not need to be synchronized with each other.

2. Furthermore, go to Settings - Messages - iMessage, and it is best to turn off the message synchronization function, so that SMS stars will not synchronize with each other