Unexplained WiFi may cause your mobile phone to be bugged. When the user connects to the WiFi maliciously tampered by the hacker, if the APP software without security detection is used, the hacker can read all kinds of private information in the mobile phone without the user's awareness.
Criminals can set up password-free Wi-Fi with the same name as the venue in public places such as airports, passenger stations and shopping malls. , to attract public connections, and then DNS hijacking, phishing interception. So be careful when connecting Wi-Fi outside.