my netgear cannot disconnectedi gave a massagealert- you are currently disconnected from the mobile broadband network

We have purchased Netgear MR1100 routers.We want to operate one in IP Passthrough mode with a public IP address.  We are in the process of getting this service (public IP address) from ATT.  We will not, in this device's configuration, use the WiFi hotspot for connectivity.  Moving beyond that to ru

Hello,I have replaced my generic unlocked netgear nighthawk mr1100 mobile hotspot with the AT&T netgear nighthawk mr1100.Can I pop the sim from the old one to the new one and setup normally? Thanks.