Thanks for your reply Marc. I've had the SIM in and out a few times, and tried different SIMs with no success yet. This router is 2 weeks old, but I think it's going in the trash. It just doesn't...

Model : Hardware Version : Firmware Version : ISP : TL-MR6400 Firmware Version: 1.4.0 0.9.1 v0001.0 Build 180719 Rel.54048n Hardware Version: TL-MR6400 v3 00000001 Hello, I have a MR6400 connected to...