Hello,
I have RM500Q-AE modem with the firmware version RM500QAEAAR13A02M4G
I have my modem connected in an embedded computing platform running Ubuntu 20.04.5 LTS.
My problem is the modem cannot connect to the mobile network at all.
When I run modem manager in debug mode, I see that it keeps printing “not yet registered in a 3GPP network… will recheck soon.” Eventually, it timed out with “3GPP registration check timed out” and failed to connect.
I have checked that the SIM card is working and unlocked, etc. I have the “data-only” SIM card. As far as I have tried and looked a lot around this forum, I got all correct information from the modem regarding the settings, signals, etc.
Could you please help?