Connection GPRS failed - Arduino UNO + Ublox SARAG350 module

I want to connect my Arduino to Blynk App by using a cellular Shield. This cellular shield is composed of a GSM/GPRS module Ublox SaraG350 and a SIM card.

Thanks to the AT commands, I know that the module is okay but the connection to the Internet is always failing.
Here is my code :

        #define BLYNK_PRINT Serial    // Comment this out to disable prints and save space

// Default heartbeat interval for GSM is 60
// If you want override this value, uncomment and set this option:
//#define BLYNK_HEARTBEAT 30

// Select your modem:
//#define TINY_GSM_MODEM_SIM800
// #define TINY_GSM_MODEM_SIM808
// #define TINY_GSM_MODEM_SIM900
// #define TINY_GSM_MODEM_BG96
// #define TINY_GSM_MODEM_A6
// #define TINY_GSM_MODEM_A7
// #define TINY_GSM_MODEM_M590
// #define TINY_GSM_MODEM_ESP8266

#include <TinyGsmClient.h>
#include <BlynkSimpleSIM800.h>

// Set serial for debug console (to the Serial Monitor, default speed 115200)
#define SerialMon Serial

// Hardware Serial on Mega, Leonardo, Micro
#define SerialAT Serial1

// or Software Serial on Uno, Nano
#include <SoftwareSerial.h>
SoftwareSerial SerialAT(8, 9); // RX, TX

// Your GPRS credentials
// Leave empty, if missing user or pass
const char apn[]  = "Orange";
const char user[] = "";
const char pass[] = "";

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
const char auth[] = "The Auth key";

TinyGsm modem(SerialAT);

void setup() 
  // Set console baud rate 

  // Set GSM module baud rate
  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  SerialMon.println("Initializing modem...");

  String modemInfo = modem.getModemInfo();
  SerialMon.print("Modem: ");

  // Unlock your SIM card with a PIN
  Blynk.begin(auth, modem, apn, user, pass);

void loop()

Here is the error I get :

Hope you can help me !

That’s quite a high baud rate to be using with SoftwareSerial.


I tried with a weaker baud rate but doesnt solve the problem

Did you try with 9600?

Yep, but same problem… I just think that the SIM card is the problem, even though I can send SMS with it