Once the SIM card has been inserted in a compatible router like the TP-Link MR500, all you have to do is switch on the router, which will automatically detect the SIM card and connect to the mobile network. You can then connect to the router's WiFi using the SSID and password indicated on the device or in its manual, and surf the Internet. It's important that the SIM card is activated and registered beforehand, and that the PIN code is deactivated if necessary to avoid any blockages when connecting. Configuration can also be fine-tuned via the router's web interface, which can be accessed via a local IP address (e.g. 192.168.1.1).
More specifically, for this type of mobile subscription with SIM card, you first need to register the SIM card on the dedicated portal, then insert the SIM into the router. The router should display a light indicating connection to the network (often blue or cyan). Once connected, the router shares the Internet connection via WiFi or Ethernet with the connected devices.
The TP-Link MR500 is a 4G/5G router with a SIM slot, so it supports this type of physical SIM card. Make sure that the PIN code request is disabled on the SIM card to prevent the router from getting stuck at the code prompt.
To sum up, the connection is made automatically once the activated SIM card has been inserted into the router, the router has been switched on, and the connection has been made to the WiFi network generated by the router. You can then manage the settings via the router's web interface if required.
