I recently bought a DFrobot SIM7000E LTE Shield and wanted to test it's connection capabilities with some AT commands. I tried doing AT+CPSI and found out that it's connected to GSM connection which is weird since im using a 4G LTE Sim card. I've tried using another 4G LTE Sim card and even an NB-IoT card but both came off connected to GSM. I've also tried to set the APN everytime i tried a different sim card but i always got an error. Anybody knows if something is wrong with my device or maybe i should try other sim cards?
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