It is not possible to receive responses to AT commands from the esp32 from the lilygo t-sim 7670SA card. Although when connected directly to the modem, I receive responses from AT commands. I use the following code:

#include "Arduino.h"


// 
#define MODEM_RX_PIN        27  //  TX 
#define MODEM_TX_PIN        26  //  RX 
#define BOARD_PWRKEY_PIN    4   
#define MODEM_RESET_PIN     25   
#define BOARD_POWERON_PIN   12  

// Настройки UART
HardwareSerial SerialAT(1);  //
#define MODEM_BAUDRATE 115200

uint32_t AutoBaud() {
    static uint32_t rates[] = {115200, 9600, 57600, 38400, 19200, 74880, 230400};
    
    for (uint8_t i = 0; i < sizeof(rates)/sizeof(rates[0]); i++) {
        uint32_t rate = rates[i];
        Serial.printf("Пробуем скорость %u...\n", rate);
        
        
        SerialAT.begin(rate, SERIAL_8N1, MODEM_RX_PIN, MODEM_TX_PIN);
        delay(500);
        
        for (int j = 0; j < 5; j++) {
            SerialAT.println("AT");
            delay(150);
            
            if (SerialAT.available()) {
                String response = SerialAT.readString();
                if (response.indexOf("OK") >= 0) {
                    Serial.printf("Успех! Скорость: %u\n", rate);
                    return rate;
                }
            }
        }
    }
    SerialAT.begin(MODEM_BAUDRATE, SERIAL_8N1, MODEM_RX_PIN, MODEM_TX_PIN);
    return 0;
}

void setup() {
    Serial.begin(115200);
    delay(1000);
    
    // 
    pinMode(BOARD_POWERON_PIN, OUTPUT);
    digitalWrite(BOARD_POWERON_PIN, HIGH);  // 
    delay(500);

    // 
    pinMode(MODEM_RESET_PIN, OUTPUT);
    digitalWrite(MODEM_RESET_PIN, LOW);
    delay(200);
    digitalWrite(MODEM_RESET_PIN, HIGH);
    delay(2000);  // 
    digitalWrite(MODEM_RESET_PIN, LOW);

    // 
    pinMode(BOARD_PWRKEY_PIN, OUTPUT);
    digitalWrite(BOARD_PWRKEY_PIN, LOW);
    delay(100);
    digitalWrite(BOARD_PWRKEY_PIN, HIGH);
    delay(500);  // 
    digitalWrite(BOARD_PWRKEY_PIN, LOW);
    delay(2000);  // 

    // 
    if(AutoBaud()) {
        Serial.println(F("\n************************************************"));
        Serial.println(F(" The modem is ready to work"));
        Serial.println(F("  AT:"));
        Serial.println(F(""));
        Serial.println(F("************************************************\n"));
    } else {
        Serial.println(F("error"));
        Serial.println(F("error"));
        Serial.println(F("error"));
        Serial.println(F("error"));
        while(1);  // 
    }
}

void loop() {
    //
    if(SerialAT.available()) {
        Serial.write(SerialAT.read());
    }
    if(Serial.available()) {
        SerialAT.write(Serial.read());
    }
    delay(1);
} 

Please tell me what could be my mistake?

When connected directly to the module, I get the answers to the AT commands. When connected via esp32, I do not receive it.