Hi, I am using the hologram sims for a tracker product with a MKR GSM. I have been able to use the sim card in Korea and the USA so far. Currently, I am testing in Kuwait, and the previously working device will not connect to the GSM network any more. Here the output of the modem messages right before failure:
Finally, enter your password: Attaching to GPRS with your APN…
AT+CGATT=1OK
AT+UPSD=0,1,“hologram”OK
AT+UPSD=0,2,“”OK
AT+UPSD=0,3,“”OK
AT+UPSD=0,7,“0.0.0.0”OK
AT+UPSDA=0,3ERROR
ERROR
I appreciate any assistance at all.