How does the new Apple phone synchronize the information of the old one?

Apple devices have the function of synchronizing data, and devices that log in to the same Apple account can synchronize data. The operation method of transferring the data of the old Apple mobile phone to the new Apple mobile phone is as follows:

Tools/materials: iPhone 13, iOS 15. 1. 1, setting 1.0.

1. Open the settings of the new mobile phone, click on the head of a secret person in the first line, log in to the Apple Wealth Sleeping Fruit account of the old mobile phone, and enter the account center page.

2. Click the "icloud" button to enter the icloud page.

3. Under the page of icloud, just turn on the switch for the data that needs to be synchronized.