Any ideas?

#include <iostream>
#include <sstream>
#include <string>
#include "M5Stack.h"
#include "M5GFX.h"
#include "M5_SIM7080G.h"

M5GFX display;
M5Canvas canvas(&display);

M5_SIM7080G device;

void log(String str) {
Serial.println(str);
canvas.fillSprite(TFT_BLACK); // Clear the canvas
canvas.setCursor(0, 0); // Reset cursor
canvas.print(str); // Print the new message
canvas.pushSprite(0, 0); // Push updated sprite to the display
}

void setup()
{
M5.begin();
display.begin();

if (display.isEPD())
{
    display.setEpdMode(epd_mode_t::epd_fastest);
    display.invertDisplay(true);
    display.clear(TFT_BLACK);
}
if (display.width() < display.height())
{
    display.setRotation(display.getRotation() ^ 1);
}

canvas.setColorDepth(1);
canvas.createSprite(display.width(), display.height());
canvas.setTextSize((float)canvas.width() / 160);
canvas.setTextScroll(false);

/* Init SIM7080G */
device.Init(&Serial2, 16, 17);

/* Reboot SIM7080G */
log("Rebooting SIM7080G...");
while (device.send_and_getMsg("AT+CREBOOT\r\n").indexOf("OK") == -1) {
    delay(1000);
}
log("Reboot successful!");

/* Set SMS text mode */
log("Setting SMS text mode...");
while (device.send_and_getMsg("AT+CMGF=1\r\n").indexOf("OK") == -1) {
    delay(1000);
}
log("SMS mode ready.");

}

void loop()
{
log("Checking for messages");

String smsList = device.send_and_getMsg("AT+CMGL=\"REC UNREAD\"\r\n"); // Fetch unread SMS
if (smsList.indexOf("+CMGL") != -1) {
    int msgStart = smsList.indexOf("\",\"");
    int msgEnd = smsList.lastIndexOf("\r\n");
    if (msgStart != -1 && msgEnd != -1) {
        String receivedMsg = smsList.substring(msgStart + 3, msgEnd); // Extract message content
        log(receivedMsg); // Display the received message
        delay(10000);

/*
if (receivedMsg.equals("desiredMessage")) {
// Do something specific
System.out.println("Action triggered for 'desiredMessage'");
}
*/

        /* Respond to the received SMS */
        String recipient = "+myphonenumbe";
        String response = "Acknowledged: " + receivedMsg;
        log("Sending response...");
        device.send_and_getMsg("AT+CMGS=\"" + recipient + "\"\r"); // Set recipient
        delay(100); // Wait for the prompt
        device.send_and_getMsg(response + "\x1A"); // Send response (Ctrl+Z to finalize)
        log("Response sent!");
    }

    /* Delete the processed message */
    device.send_and_getMsg("AT+CMGD=1,4\r\n"); // Delete all messages to avoid duplicates
}

delay(1000); // Short delay between operations

}