iOS Device Detector

Extension+UIDevice.swift

import Foundation
import UIKit

extension UIDevice{
    
    var deviceModel : DeviceFamily{
        
        switch UIScreen.main.nativeBounds.height {
        case 960:
            return .iPhone_4
        case 1136:
            return .iPhone_5
        case 1334:
            return .iPhone_6_7_8
        case 1792:
            return .iPhone_XR
        case 1920, 2208:
            return .iPhone_6P_7P_8P
        case 2436:
            return .iPhone_X
        case 2688:
            return .iPhone_XsMax
        default:
            return .unknown
        }
        
    }
    
}

enum DeviceFamily{
    
    case iPhone_4  // 3.5 inch
    case iPhone_5  // 4 inch
    case iPhone_6_7_8  // 4.7 inch
    case iPhone_6P_7P_8P  // 5.5 inch
    case iPhone_X  // 5.8 inch
    case iPhone_XR  // 6.1 inch
    case iPhone_XsMax  // 6.5 inch
    case unknown  // alien device
}