@margherita.b Hi, kindly refer to the thread below to do some basic troubleshooting: [Troubleshooting] SIM Card not Found? If none of these helps, you may try to contact the local tech support to...

@sharkany It seems your issue is not related to this topic, you can check this topic we provided: [Troubleshooting] LTE keeps disconnecting

@l3x You need to provide some basic information, then we can help locate the issue. What is the current router firmware on your C80? Ensure it is updated to the latest version, then you can try to...

@djf5502 Thank you very much for the detailed information. We would like to investigate the issue further via email, please kindly check and respond.

@Dinesh1991 Hello all, we here provided a new firmware for the Archer C20(INWISP)_V5, please update and install it on your router, then check if you can manage it on the Tether app: [New Firmware]...

Hello all, we here provided a new firmware for the Archer C20(INWISP)_V5, please update and install it on your router, then check if you can manage it on the Tether app: [New Firmware] Latest...