Unable to establish a GPRS connection (IDFGH-7643) about esp-protocols HOT 1 CLOSED

#include "driver/gpio.h"
// TTGO T-Call pin definitions
#define MODEM_RST            GPIO_NUM_5
#define MODEM_PWKEY          GPIO_NUM_4
#define MODEM_POWER_ON       GPIO_NUM_23
#define MODEM_TX             GPIO_NUM_27
#define MODEM_RX             GPIO_NUM_26
#define I2C_SDA              GPIO_NUM_21
#define I2C_SCL              GPIO_NUM_22


void enable_pwrkey(void) {
    ESP_LOGI(TAG, "Enabling PWRKEY");
    ESP_ERROR_CHECK(gpio_set_direction(MODEM_RST, GPIO_MODE_OUTPUT));
    ESP_ERROR_CHECK(gpio_set_direction(MODEM_PWKEY, GPIO_MODE_OUTPUT));
    ESP_ERROR_CHECK(gpio_set_direction(MODEM_POWER_ON, GPIO_MODE_OUTPUT));

    ESP_ERROR_CHECK(gpio_set_level(MODEM_RST, 1)); // RESET high

    ESP_ERROR_CHECK(gpio_set_level(MODEM_POWER_ON, 1)); // PWKEY high


    ESP_ERROR_CHECK(gpio_set_level(MODEM_PWKEY, 1)); // PWRKEY high
    vTaskDelay(100 / portTICK_PERIOD_MS);
    ESP_ERROR_CHECK(gpio_set_level(MODEM_PWKEY, 0)); // PWRKEY low
    vTaskDelay(1000 / portTICK_PERIOD_MS);
    ESP_ERROR_CHECK(gpio_set_level(MODEM_PWKEY, 1)); // PWRKEY high
    
    


    vTaskDelay(6000 / portTICK_PERIOD_MS);
//
//
//    ESP_ERROR_CHECK(gpio_set_pull_mode(GPIO_NUM_27, GPIO_PULLUP_ONLY));

    ESP_LOGI(TAG, "Enabling PWRKEY ... done");
}