Sending AT commands and reading response

Hello, I have a SM5100b that I have successfully connected to a host manually via the Arduino Serial window and passthrough sketch.

I'm brand new to Arduino coding, but I do have limited coding experience in Matlab primarily. I'd like to write a function that connects the module and reads each of the responses that the Module outputs. Here is what I have, but it's not working:

#include <string.h>         //Used for string manipulations
char incoming_char=0;      //Will hold the incoming character from the Serial Port.

void setup()
{
  //Initialize serial ports for communication.
  Serial.begin(9600); // for terminal communication
  Serial1.begin(115200); //  for GSM module communication
  Serial.println("Starting SM5100B Communication...");
}

void loop() {
  //If a character comes in from the cellular module...
  
  if(Serial1.available() >0)
  {
    incoming_char=Serial1.read();    //Get the character from the cellular serial port.
    Serial.print(incoming_char);  //Print the incoming character to the terminal.
  }
  
  Serial1.print("AT+SATT=1,0");
  Serial1.print("AT+CGATT?");
 
}

Pretty basic I know but it doesn't return any of the loading data (+SIND: 11 etc) nor the module response after it sends the AT commands. Any help is greatly appreciated.

try : Serial.print(”AT+CGATT=1"); //GPRS attach
Serial.print(”AT+CGATT=0"); //GPRS detach

read the AT command set data sheet, lots of info to go through, but it will make sense eventually

shouldn't you be using println instead of print?

How many times per second are you jamming data at the device? How long are you waiting for a reply? The poor module can't get a word in edgewise.