Unity - Detecting between a tablet/iPad and mobile

DeviceType.cs

public enum DeviceType {
    Tablet,
    Phone
}

DeviceTypeChecker.cs

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public static class DeviceTypeChecker {
    private static float DeviceDiagonalSizeInInches() {
        float screenWidth = Screen.width / Screen.dpi;
        float screenHeight = Screen.height / Screen.dpi;
        float diagonalInches = Mathf.Sqrt(Mathf.Pow(screenWidth, 2) + Mathf.Pow(screenHeight, 2));

        return diagonalInches;
    }

    public static DeviceType GetDeviceType() {
        #if UNITY_IOS
        bool deviceIsIpad = UnityEngine.iOS.Device.generation.ToString().Contains("iPad");
        if (deviceIsIpad) {
            return DeviceType.Tablet;
        }

        bool deviceIsIphone = UnityEngine.iOS.Device.generation.ToString().Contains("iPhone");
        if (deviceIsIphone) {
            return DeviceType.Phone;
        }
        #elif UNITY_ANDROID
        float aspectRatio = Mathf.Max(Screen.width, Screen.height) / Mathf.Min(Screen.width, Screen.height);
        bool tablet = (DeviceDiagonalSizeInInches() > 6.5f && aspectRatio < 2f);

        return tablet ? DeviceType.Tablet : DeviceType.Phone;
        #endif
    }
}