안드로이드 TCP/IP 클라이언트 포트문제입니다..(몇몇 무선랜 IP에서 접속이안되요)

public class MainActivity extends Activity {
	private static String ip = "xxx.xxx.xxx.xxx"; // 서버 아이피 주소
	private static int port = 2150; // PORT 번호
	Socket socket;
	Handler h = new Handler();
 
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		ConnectThread connectThread = new ConnectThread();
		connectThread.start();
 
	}
 
	class ConnectThread extends Thread {
		public void run() {
			connect();
		}
	}
 
	private void connect() {
		try {
			socket = new Socket(ip, port);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
 
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
}