Noting comes up in serial monitor while using GSM SIM 900

I started using this code and everything worked perfectly , but nothing comes up in the serial monitor. Why is this?

#include <SoftwareSerial.h>
#include <String.h>

SoftwareSerial mySerial(2,3);

void setup()
{
mySerial.begin(19200); // the GPRS baud rate
Serial.begin(19200); // the GPRS baud rate
delay(500);
mySerial.println(“ATD + +9197xxxxxxxx;”);//dial the number
delay(100);
}

void loop()
{
}

Because you aren't sending anything to the serial monitor perhaps? There are no Serial.print() statements.

Made it to work…

#include <SoftwareSerial.h>
#include <String.h>

SoftwareSerial mySerial(2,3);

void setup()
{
mySerial.begin(19200); // the GPRS baud rate
Serial.begin(19200); // the GPRS baud rate
delay(500);
}

void loop()
{
//after start up the program, you can using terminal to connect the serial of gprs shield,
//if you input ‘t’ in the terminal, the program will execute SendTextMessage(), it will show how to send a sms message,
//if input ‘d’ in the terminal, it will execute DialVoiceCall(), etc.

if (Serial.available())
switch(Serial.read())
{
case ‘t’:
SendTextMessage();
break;
case ‘d’:
DialVoiceCall();
break;

}
if (mySerial.available())
Serial.write(mySerial.read());
}

///SendTextMessage()
///this function is to send a sms message
void SendTextMessage()
{
mySerial.print(“AT+CMGF=1\r”); //Because we want to send the SMS in text mode
delay(100);
mySerial.println(“AT + CMGS = “+919xxxxxxxxx””);//send sms message, be careful need to add a country code before the cellphone number
delay(100);
mySerial.println(“How are you ?”);//the content of the message
delay(100);
mySerial.println((char)26);//the ASCII code of the ctrl+z is 26
delay(100);
mySerial.println();
}

///DialVoiceCall
///this function is to dial a voice call
void DialVoiceCall()
{
mySerial.println(“ATD + +919xxxxxxxxxx;”);//dial the number
delay(100);
mySerial.println();
}