Apple mobile phone * * * uses Apple ID, will it synchronize the content of the mobile phone?

Apple mobile phone * * * with Apple ID:

1, synchronization, and even if * * * uses a file, don't turn on all iCloud synchronization options, otherwise the data information will be synchronized with each other, resulting in confusion of mobile phone information.

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

How can I not synchronize the content with the ID of the Apple phone?

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

4. The automatic download function should also be turned off. Click Set iTunesstore and AppStore, and the function of automatically downloading software will also be turned off.

5, Settings, Information, iMessage, turn off the function of information synchronization, so that the short messages will not be synchronized with each other.