How does Wenquxing telephone watch receive information?

Wenquxing phone watch receives information and inserts a calling card.

You can plug in a phone card, you can surf the Internet directly through the phone card to find the traffic of the phone card, and there is a more advanced function with WiFi, but in that case, the general price will be slightly higher, that is, the dual access method, one through the phone card, one through WiFi, and one through ordinary Bluetooth. You can't surf the Internet, but you can only connect your mobile phone and forward it through it.