GSM shiled sim900 bad response... plz help

hay all ;

iam using GSM shiled sim 900 when i try to send AT command throw software serial h get weird characters on serial program it was working before ... but i don't know what happen

here is my code iam using

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // iam using 10 , 11 pins in my arduion leonardo

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

void loop()
{
if (mySerial.available())
Serial.write(mySerial.read());
if (Serial.available())
mySerial.write(Serial.read());

}

....................................................................

i attached photo of serial program response

Untitled.jpg

(deleted)

i tried this baud rate but i get same response :frowning: