SafeArea.cs

using UnityEngine;

    [RequireComponent(typeof(RectTransform))]
    [ExecuteAlways]
    [DefaultExecutionOrder(-100)]
    public class SafeArea : MonoBehaviour
    {
        private DeviceOrientation _postOrientation;
        private RectTransform _rect;

        [SerializeField] private bool comfortXMax = true;
        [SerializeField] private bool comfortXMin = true;
        [SerializeField] private bool comfortYMax = true;
        [SerializeField] private bool comfortYMin = true;

        private void Awake()
        {
            _rect = GetComponent<RectTransform>();
        }

        private void Start()
        {
            AdjustView();
        }

        private void Update()
        {
            AdjustView();
        }

        private void AdjustView()
        {
            if (Input.deviceOrientation != DeviceOrientation.Unknown && _postOrientation == Input.deviceOrientation)
                return;

            _postOrientation = Input.deviceOrientation;

            var area = Screen.safeArea;
            var resolution = Screen.currentResolution;

            _rect.sizeDelta = Vector2.zero;

            var xMax = comfortXMax ? area.xMax / resolution.width : 1;
            var yMax = comfortYMax ? area.yMax / resolution.height : 1;
            var xMin = comfortXMin ? area.xMin / resolution.width : 0;
            var yMin = comfortYMin ? area.yMin / resolution.height : 0;

            _rect.anchorMax = new Vector2(xMax, yMax);
            _rect.anchorMin = new Vector2(xMin, yMin);
        }
    }