AngularJS custom service does not work

I'm new to AngularJS and I'm trying to make a simple CRUD. I'm trying to pass data from one screen to another using a service, but it does not work and I can not figure out why. Follow my code.

Follow my code

var app = angular.module("app", []);
app.factory('clienteService', function () {
var savedCliente = {};
function set(cliente) {
    savedCliente = cliente;
}
function get() {
    return savedCliente;
}

return {
    set: set,
    get: get
}

app.controller("clientesCtrl", function ($scope, $http, clienteService) {
  $scope.SetDados = function (cliente) {
     clienteService.set(cliente);
 }
});

app.controller('AltararClienteCtrl', function ($scope, $http, clienteService) {
 $scope.init = function () {
     $scope.cliente =  clienteService.get();
 }
});