You need to use the carrier's WLAN. It is recommended that users who have subscribed to WLAN service log in with their existing passwords. If you don't order, you can apply for a dynamic password if you use WLAN temporarily. If you plan to use WLAN for a long time, it is recommended to handle business and log in with a static password. If there is no response to the password entered, or there are other problems, call the supplier's customer service phone for consultation.