Angularjs $http.post taking too long

Question

I have a web API made in php that accesses a Mysql database that has return in JSON and I am using Ionic + Angularjs to develop an App that will use this API.

In my file services.js I created a Factory for each entity of my system, this way :

var apiUrl = "http://minhaUrl/";

angular.module('starter.services', [])

.factory('Login', function($http, $httpParamSerializerJQLike){
  return {
    verifica: function(emailParam, senhaParam){
      return $http({
        method: "POST",
        url: apiUrl + "api/login/verificaLogin/",
        data: $httpParamSerializerJQLike({
          email: emailParam,
          senha: senhaParam
        }),
        headers: {'Content-Type': 'application/x-www-form-urlencoded'}
      });
    } 
  }
})
.factory('Eventos', function($http, $httpParamSerializerJQLike){
  return {
    getCurrent: function(){
      return $http({
        method: 'POST',
        url: apiUrl + "api/eventos/listareventos/",
        data: $httpParamSerializerJQLike(
        {
          param1: val1,
          param2: val2
        }),
        headers: {'Content-Type': 'application/x-www-form-urlencoded'}
      });      
    }
  }
});

In the controller.js file I implement login this way

.controller('LoginCtrl', function($scope, Login, Eventos){

  //logar() é disparado no ng-click de um botão no HTML
  $scope.logar = function(){
    if($scope.Login.email && $scope.Login.senha){
      Login.verifica($scope.Login.email, $scope.Login.senha)
        .then(function(resp){
          if(resp.data.sucesso){      //(1) Aqui ele demora menos de 1 segundo para entrar    

            localStorage.setItem("usuario", JSON.stringify(resp.data.login));

            Eventos.getCurrent().then(function(respEventos){
               $scope.Evento = respEventos.data.eventos[0]; //(2) Aqui demora uns 30 segundos pra entrar
            });

          }
          else{
            $scope.showAlert('E-mail ou senha incorretos!', 'Confirme as informações antes de logar.');
          }
        }, function(){
          $scope.showAlert('Não foi possível completar a ação', 'Tente novamente mais tarde');
        });
    }
    else{
      $scope.showAlert('E-mail ou senha incorretos!', 'Confirme as informações antes de logar.');
    }
  }
});

First the user logs into the application with his email and password, after checking his identity the app must load the current event.(1) The first request, from login, is executed quickly, but the second (2) takes a long time to enter the then() method. I’ve tried using Success instead, but it’s the same way. I tested the service with exactly the same parameters in the Chrome app Advanced REST Client and the response time was around 600ms.

Is my server the problem? If the problem is with the server, why is it running much faster in ARC? Could be some problem related to one request being inside the other?

I tested the application by Google Chrome, Ionic View on mobile and native app for android, all versions find the same problem, but Chrome appears to run faster.