How does Xiao Di use traffic in the genius mobile phone watch?

According to official website, Little Genius, due to the small degree of networking, the known functions can be used normally.

Xiao Di is an intelligent voice assistant and needs to be used online. Under normal circumstances, the little genius phone watch can't be connected to the network when worn on his hand, so he needs to use mobile data connection in an environment without Wi-Fi, which consumes traffic.

The use of small functions requires traffic consumption and power consumption. Users are advised to set up WiFi for their watches in advance, which can at least guarantee free use in Wi-Fi environment such as home or office.