how to get zim card number

[sameera liyanage]

I need to creat a application for android phones.When a new zim card add to phone i need to send that zim card number to given another phone.So i need to getphone number.
below is the my class

package com.telephony.aruna;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.widget.TextView;

public class ZimNumber extends Activity {

	String mPhoneNumber;
	
	public void onCreate(Bundle savedInstanceState) {
		
		super.onCreate(savedInstanceState);
	       setContentView(R.layout.zim);
		
		TelephonyManager tMgr =(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
		  mPhoneNumber = tMgr.getLine1Number();
		TextView t=(TextView)findViewById(R.id.tz);
		t.setText(mPhoneNumber);
	}
	
}

but i don't get zim number.It gives me another.Please chceck debug screen attached

[zoheb hassan]

Is it zim or sim??

[sameera liyanage]

ya.It is sim.Anyway i still have same problem ?

[sameera liyanage]

can anyone help me ?

[sameera liyanage]

I am going to creat application for secure the phone.When the phone is stolen and if the thief put a new sim to it i need to send that sim number to given number automatically as a sms.So i need to get a sim number.Still i am unable to get it.can anyone help me ?