Xiaomi's one-button replacement function means that everything has been moved to the new machine?

Changing the phone with one button can quickly copy the contacts, text messages and application data of the old phone to the new phone.

One-button switching supports contacts, short messages, chat records, photos, music, videos, emails, notes, some system settings, third-party applications and their data (such as game progress), and desktop icon layout. The following versions of MIUI Stable Edition and other Android Roms only support the transmission of contacts, short messages (including MMS), call records and applications (excluding data).

Extended data:

One-button switching is a switching software developed by Angel Zhilian Technology Co., Ltd., which has zero traffic switching and fast data conversion. Zero traffic, no need to log in any account, easy to change machines, and automatically export contacts, text messages and applications. It's as simple as changing a mobile phone.

You don't have to worry about the data in the old one when you change your mobile phone. You can export important data in your mobile phone with one click. It's as simple as changing a mobile phone.

Zero traffic transmission, zero traffic reception

Zero traffic, no need to log in any account, easy to change machines, and automatically export contacts, text messages and applications. It's as simple as changing a mobile phone.

Quickly copy 6 kinds of data

Changing the phone with one button can quickly copy six kinds of data, such as contacts, short messages, applications, pictures, videos and music, from the old phone to the new phone.

Baidu Encyclopedia: One-click Changing Machine