Flutter + Php + Mysql

Question

Well, I’m new to flutter but basically I’m doing a simple registration with 3 fields.

Summarizing my problem is that I can register normally by Androidstudio emulator, but when Gero APK and I try to register by my mobile phone it does not perform the registration.

1 - I am using the local server Xampp, 2 - I put the fixed IP of my notebook in the url. 3 - I can access my server and view the files through the mobile browser morally(including it inserts in the table when access the data by the mobile browser).

Follow my connection code below:

_InserirDados() async {
    var url = Uri.parse("http://192.168.1.103/flutter/inserir.php");
    http.post(url,
        body: {
          "nome" : nometxt.text,
          "email" : emailtxt.text,
          "password" : passwordtxt.text
        });
        HttpOverrides.global = new MyHttpOverrides();
    
    
        
  }

My insert.php

<?php

    include("database.php");

    $nome = $_POST['nome'];
    $email = $_POST['email'];
    $password = $_POST['password'];


    $res = $pdo->prepare("INSERT INTO usuario (User_username, User_Login, User_Password) VALUES ('$nome', '$email', '$password')");
    
    $res->execute();

    if ($res) {
        echo(json_encode(array("code" => 1, "mensagem" => "Inserido com sucesso")));
    }else {
        echo(json_encode(array("code" => 2, "mensagem" => "Falha na insersão dos dados.")));    
    }



?>