Issues with MQTT Connection to AWS IoT Core Using SIM868 and ESP32: TLS 1.2 Configuration

[th1vanka]

I’m trying to connect my SIM868 and ESP32 to AWS IoT Core using MQTT over a cellular network with a SIM card, but I'm encountering issues, especially with TLS 1.2 configuration. Can anyone share documentation or example code that demonstrates how to establish a secure MQTT connection with these devices?