これは私のサービスファイルです:
public class SMSCounterService extends Service {
    /** Called when the activity is first created. */
    @Override
    public void onCreate() {
        Log.d(LOG_TAG, "SMSCounterService: Constructor");
        super.onCreate();
        dbActivities = new DBActivities(this);
        dbActivities.open();    // Create or open the existing DB if already created
        IntentFilter filter = new IntentFilter();
        filter.addAction("android.provider.Telephony.SMS_SENT");
        registerReceiver(receiver, filter);
    }
    @Override
    public void onDestroy() {
        unregisterReceiver(receiver);
        dbActivities.close();
        super.onDestroy();
    }
    private final BroadcastReceiver receiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if(intent.getAction().equals("android.provider.Telephony.SMS_SENT")) {
                smsCount++;
                Log.d(LOG_TAG, "SMSCounterService: smsCount=" +smsCount);
                long dbInsertReturn = dbActivities.insertIntoDB(smsCount);
            }
        }
    };
「SMSCounterService: Constructor」というログが表示されます。そのため、onCreate() メソッドが呼び出されます。しかし、SMS を送信すると、BroadcastReceiver はそれを識別できません。