Specific steps:

First, open the communication, press the menu function key and import/export.

Here, you can choose to import from a storage device for the first time.

Choose your own account to create a contact, that is, you have synchronized the contact data in Xiaomi account or Google account before, and now you can directly choose to import it.

Select Import from another mobile phone, and select another mobile phone. At this time, enter the choice of mobile phone model and turn on Bluetooth. There is Bluetooth import, which is equivalent to transmitting contact data.

After selecting the model, click Next.

When searching in Bluetooth, you only need to find the phone model that needs to be paired, and establish connection and transmission.

Conveniently, if you use third-party software, QQ address book or others, these two methods are also possible, but you need to install third-party software. At present, QQ client also supports the backup of mobile phone contacts, and then it can be solved by logging in QQ.