ESP32 SIM7600 Cellular Modem Interface using Arduino IDE
With example code, this article covers ESP32 SIM7600 4G LTE cellular modem interfacing using Arduino IDE. Hardware used is ESP32 Gateway.
4g lte
“ERROR: SIM Failure” in Simcom 4G LTE Modems – Solutions
I list some cases with using SIM commands like AT+CIMI which result in “ERROR: SIM failure”. Common problems are listed along with solutions.