Supplementary content:
First, what we need to know is that wifi network authentication is a network encryption mode, which is used to control access devices and collect information. There are two types of wifi that need authentication.
1. One is completely free. Enter the corresponding mobile phone number to get the verification code and access the network. This kind of wifi is common in public or commercial places, such as KFC, airports, shopping malls, public transportation and so on.
2. The other is charging, with a fixed user name and password (a few can pass dynamic password verification). The typical application of this kind of wifi is mobile or Unicom wlan.