Thanks for your response (and sorry for my very late response). Just to give some closure to this, at the end it was a hardware issue on the board. There was a problematic connection between the Zigbee module and the LTE module pin used for power down, so there were undesired reboots on the LTE modu...

Hello, I am using the ESP32 in a custom board with an LTE module (SIMCom SIM7600A) and a Zigbee module (Silicon Labs EFR32MG1 Zigbee SoC), communicating with both of them through UART. If I only use the LTE module, I am able to successfully connect to the Internet and perform HTTP/MQTT calls, using ...