How to enable webHttp connection in WCF?

I am developing a solution for transfering data from android phone to the server (written in C#/.NET).

I created a WCF service and testing with emulator everything worked fine. Then when I tried to login from mobile phone (connected to home wifi network) I got the following exception message:

org.apache.http.conn.HttpHostConnectException: Connection to http://192.168.1.5:8000 refused

I would really appreciate if anyonecould give a look at the config file and the interface and give any advice on how to enable connection.

web.config:

<configuration>
  <system.web>
    <compilation debug="true"/>
  </system.web>
  <system.serviceModel>
    <bindings>
      <webHttpBinding>
        <binding name="DefaultBinding"
                 allowCookies="true"
                 bypassProxyOnLocal="true" />
      </webHttpBinding>
    </bindings>
    <behaviors>
      <endpointBehaviors>
        <behavior name="RESTFriendly">
          <webHttp/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <services>
      <service name="RESTServer.LoginService">
        <endpoint address=""
                  behaviorConfiguration="RESTFriendly"
                  binding="webHttpBinding"
                  bindingConfiguration="DefaultBinding"
                  contract="RESTServer.ILoginService" />
      </service>
    </services>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" />
  </system.serviceModel>
</configuration>

Interface:

[ServiceContract()]
public interface ILoginService
{
    [WebGet(ResponseFormat = WebMessageFormat.Xml, UriTemplate = "/username={username}&password={password}")]
    [OperationContract]
    Message Login(string username, string password);
}

Service implementation:

public class LoginService : ILoginService
{
    public Message Login(string username, string password)
    {
        Message message = new Message();
        SQLWorks sqlWorks = new SQLWorks();
        string strSession = sqlWorks.Login(username, password);
        string strMessage;
        message.Session = strSession;
        if(strSession == "")
        {
            strMessage = "Login failed! Please check your username/password!";
        }
        else
        {
            strMessage = "Login Successful";
        }
        message.ErrorMessage = strMessage;
        return message;
    }
}

In order to connect to your service, it needs to be hosted on a public web server. It looks like the address you're using 192.168.1.5:8000 is a home network address, which is not accessible from the outside world (a phone).