I have a device running 24/7, usually its only checking signal strength and sending some data every hour. It was running OK for couple of days but then when it tried to open the connection with AT#SD it got response +CME ERROR: 10. After switching power off and checking the SIM card (taking out of device and back again) it was working again.
Could this be caused only by some HW design flaw or can it be caused by some wrong SW/FW action?
Maybe only a temporary poor contact at SIM pins, watch it further.
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