The message in red: Message:Please ensure that your SIM/UIM is plugged in and on unlock status. The SIM is definitely plugged in, and I've unplugged and re-plugged in twice. What does it mean about...

I recently purchased an ER605, and I'm using it as a router/firewall from a BTBSH6 in Bridging mode. I also have a MiFi with a GiffGaff SIM installed that I've been using as a backup for when the...