Initial position of glb model?

Question

three.js

Hello. Began to delve into this technology and can not understand one point. Here is my model.
Does it initially have some kind of initial position? How can I set any model exactly? That is, I have a phone model, With this code, it is in this position

spoiler

const renderer = new THREE.WebGLRenderer();
const scene = new THREE.Scene();
const camera =new THREE.PerspectiveCamera(
    75,
  window.innerWidth / window.innerHeight,
  1,
  1000
);
camera.position.z = 1;

let mesh;

renderer.setSize(window.innerWidth, window.innerHeight);
scene.background = new THREE.Color(0xeff5555);
scene.add(new THREE.HemisphereLight(0xffffcc, 0x333399, 1.0));
camera.position.z = 3; 
camera.position.y = 15; 

new GLTFLoader().load('/images/content/iphone.glb', ({ scene: model }, animations) => {
  scene.add(model);
  
  model.scale.setScalar(1);
  
  camera.lookAt(model.position);

  mesh = model;

  mesh.scale.set( 10, 10, 10 );



});

const animate = () => {
  if (mesh) {
    mesh.rotation.y = 0;
    mesh.rotation.x = 0;
    mesh.position.y = 0;
    mesh.position.x = 0;
  }

  renderer.render(scene, camera);

  requestAnimationFrame(animate);
};

animate();

document.body.appendChild(renderer.domElement);

Do I need to tweak the camera.pos model.rotation values ​​each time to align the model to its normal position?
ps plus another "ladder" at the borders because of what could it be?