This has already been resolved, but I just wanted to add it to the thread for anyone else that might have the same issue. The issue was the Hologram SIM card being slightly too thin for my device. It just wasn't making good contact, so I was given a workaround by the very helpful Hologram support to cut a small piece of paper and slide it on top of the SIM card for a tighter fit. I ended up using a piece of thin, stiff plastic (from an anti-static, electronics bag) cut in the shape of the SIM, worked like a charm. Device registers fine now. Thanks for the tip, not sure if the SIM cards are out of spec or my device, but I do appreciate your time looking into this.