How to cancel the SMS synchronization of two Meizu mobile phones?

Because your two mobile phones use the same account. You can solve this problem by logging in two different accounts for your two mobile phones.

Solution: Set up-Account-Exit one of yours. Do it. Or set-account-data and synchronization-information-delete √. Do it.

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