Suddenly, I’m experiencing a SIM card read error on 18 devices (of 150+ installed) in my production network.
The build is:
SBC = RPi3B+
OS = v9 (stretch)
Sixfab = 4G/LTE hat v2 | EC25-A
Units are online, accessible and otherwise behaving normally.
The units have been deployed for different amounts of time, anywhere from 1 to 7 months old now.
All units are in separate locations (no commonalities: environmental, network, etc.)
No firmware,package,driver or other updates have been performed. Image installed is cloned from a master image, maintained & validated by me.
I’m going to have to visit each location to trouble shoot & remediate; I was just wondering if anyone experienced this previously and could share the cause.