Not receiving string from phone

Using Arduino Programming Questions
1 
SoftwareSerial bluetooth(8, 9); // RX, TX if (bluetooth.available() > 0);
String string1 = "*left#";
    {
//off();
      data = bluetooth.readString();

      // }

      //Serial.print("data:");
      Serial.println(data);
      if (data.equals(string1))
      {
        Serial.println("LEFT");
        left();
      }

void left()
{
 digitalWrite(in1, LOW);
  digitalWrite(in2, LOW);
  digitalWrite(in3, LOW);
  digitalWrite(in4, HIGH);

Ive used this code to communicate from my phone to HC-05 module,
but in the serial monitor the following message is being displayed:

Invalid3121
3121
bluetooth

Invalid3143
3143
bluetooth

the arduino in not receiving the string sent from the phone, is there any issue with the codes?

2

Without seeing your complete program it is impossible to offer advice.

It is not a good idea to use the String (capital S) class on an Arduino as it can cause memory corruption in the small memory on an Arduino. Just use cstrings - char arrays terminated with 0.

Have a look at the examples in Serial Input Basics - simple reliable ways to receive data.

...R