Excuse me, millet cloud service address book and SMS synchronization strategy?

Xiaomi deletes local contacts and the cloud is also deleted.

The server was deleted. If the mobile phone is not deleted, it will go to the server synchronously.

Text messages are the same as contacts

The first time you add it from the server to the local area, the server will add it when you add it to the mobile phone, and the server will delete it when you delete the mobile phone, depending on whether the location you choose when you create a new contact is Xiaomi account or other accounts and mobile phones. When you create a new contact, Xiaomi server will add and delete it.