Just find the relevant operator to stop it. Wi-Fi, also known as "mobile hotspot" in Chinese, is a trademark of the Wi-Fi Alliance manufacturer as a product brand certification. It is a wireless LAN technology created in the IEEE802.11 standard. Based on the close relationship between the two systems, some people often regard Wi-Fi as a synonymous term for the IEEE802.11 standard. "Wi-Fi" is often written as "WiFi" or "Wifi", but these are not recognized by the Wi-Fi Alliance.