Hi. I purchase a Quectel BG77 which comes on a small board RAK5860. The module respond to AT comands but fail to register on the network. The SIM works on a phone and another m.2 laptop module. The small board comes with a USB which can be connected to a PC after driver are installed. A new WWAN network shows, but always without service on windows 11.
Any suggestion or AT-command to start solving the problem?