I recently received a B-series LTE M.2 system on a module and an SoM evaluation board.
I haven’t been able to claim it. My phone will pair with it and activate the sim card (or did the first time) before the process fails when the device needs to connect to the particle cloud. It cannot “connect to the internet via cellular” successfully. “Setup has encountered an error and cannot continue.”
Although the process has failed (many times) the SIM card is shown as active in the particle console, and I cannot release it because that process also fails. This is in the UK if that makes a difference.
I love particle products so it’s a bit disappointing that this one can’t be claimed.