Вот код, который я использую,

public class MyCallControllerActivity extends Activity 
{
    static int Count;
 /** Called when the activity is first created. */
 CheckBox blockAll_cb;//,blockcontacts_cb;
 BroadcastReceiver CallBlocker;

 TelephonyManager telephonyManager;


@Override
 public void onCreate(Bundle savedInstanceState) 
{
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 initviews();

 CallBlocker =new BroadcastReceiver()
 {


@Override
 public void onReceive(Context context, Intent intent) 
 {
     Bundle bundle = intent.getExtras();
     //Bundle bundle = intent.getExtras();


        if ( bundle != null )
        {
           // do you manipulation on String then if you can abort.


        }

        Object messages[] = (Object[]) bundle.get("pdus");
        SmsMessage smsMessage[] = new SmsMessage[messages.length];

        for (int n = 0; n