Remote authentication method, device and equipment based on SIM (Subscriber Identity Module) and medium

The invention discloses a remote authentication method and device based on SIM, equipment and a medium, and relates to the technical field of computers, and the method comprises the steps: applying for a virtual SIM from a service platform through a user terminal; a target virtual SIM corresponding to the location of the user terminal is selected from the server through the service platform, and the target virtual SIM is inserted into an idle card slot of the user terminal in a simulated mode; sending an authentication request to a user terminal through a target base station, and sending the authentication request to a server through the user terminal and a service platform; and authenticating the target virtual SIM through the server based on the authentication request, and sending an authentication result to the target base station through the service platform and the user terminal. According to the application, the virtual SIM located at the location of the user terminal is selected to replace the roaming