NS_CLASS_AVAILABLE_IOS(2_0) @interface UIDevice : NSObject + (UIDevice *)currentDevice;@property(nonatomic,readonly,strong) NSString    *name;              // e.g. "My iPhone"
@property(nonatomic,readonly,strong) NSString    *model;             // e.g. @"iPhone", @"iPod touch"
@property(nonatomic,readonly,strong) NSString    *localizedModel;    // localized version of model
@property(nonatomic,readonly,strong) NSString    *systemName;        // e.g. @"iOS"
@property(nonatomic,readonly,strong) NSString    *systemVersion;     // e.g. @"4.0"
@property(nonatomic,readonly) UIDeviceOrientation orientation __TVOS_PROHIBITED;       // return current device orientation.  this will return UIDeviceOrientationUnknown unless device orientation notifications are being generated.

@property(nullable, nonatomic,readonly,strong) NSUUID      *identifierForVendor NS_AVAILABLE_IOS(6_0);      // a UUID that may be used to uniquely identify the device, same across apps from a single vendor.

@property(nonatomic,readonly,getter=isGeneratingDeviceOrientationNotifications) BOOL generatesDeviceOrientationNotifications __TVOS_PROHIBITED;
- (void)beginGeneratingDeviceOrientationNotifications __TVOS_PROHIBITED;      // nestable
- (void)endGeneratingDeviceOrientationNotifications __TVOS_PROHIBITED;@property(nonatomic,getter=isBatteryMonitoringEnabled) BOOL batteryMonitoringEnabled NS_AVAILABLE_IOS(3_0) __TVOS_PROHIBITED;  // default is NO
@property(nonatomic,readonly) UIDeviceBatteryState          batteryState NS_AVAILABLE_IOS(3_0) __TVOS_PROHIBITED;  // UIDeviceBatteryStateUnknown if monitoring disabled
@property(nonatomic,readonly) float                         batteryLevel NS_AVAILABLE_IOS(3_0) __TVOS_PROHIBITED;  // 0 .. 1.0. -1.0 if UIDeviceBatteryStateUnknown

@property(nonatomic,getter=isProximityMonitoringEnabled) BOOL proximityMonitoringEnabled NS_AVAILABLE_IOS(3_0); // default is NO
@property(nonatomic,readonly)                            BOOL proximityState NS_AVAILABLE_IOS(3_0);  // always returns NO if no proximity detector

@property(nonatomic,readonly,getter=isMultitaskingSupported) BOOL multitaskingSupported NS_AVAILABLE_IOS(4_0);@property(nonatomic,readonly) UIUserInterfaceIdiom userInterfaceIdiom NS_AVAILABLE_IOS(3_2);- (void)playInputClick NS_AVAILABLE_IOS(4_2);  // Plays a click only if an enabling input view is on-screen and user has enabled input clicks.@end

typedef NS_ENUM(NSInteger, UIUserInterfaceIdiom) {UIUserInterfaceIdiomUnspecified = -1,UIUserInterfaceIdiomPhone NS_ENUM_AVAILABLE_IOS(3_2), // iPhone and iPod touch style UIUIUserInterfaceIdiomPad NS_ENUM_AVAILABLE_IOS(3_2), // iPad style UIUIUserInterfaceIdiomTV NS_ENUM_AVAILABLE_IOS(9_0), // Apple TV style UI
};

//详细判断iPhone设备信息, 区分横屏和竖屏if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone){//获取屏幕尺寸信息CGSize screenSize = [UIScreen mainScreen].bounds.size;//竖屏情况if (screenSize.height > screenSize.width){if (screenSize.height == 568){//iPhone 5/5S/5C (iPod / iPod touch) 等设备
            }else if (screenSize.height == 667){//iPone 6 / 6S 等设备
            }else if (screenSize.height == 736){//iPone 6 Plus / 6S Plus 等设备
            }else{//iPhone 4 / 4S 等设备
            }}//横屏情况if (screenSize.width > screenSize.height){if (screenSize.width == 568){//iPhone 5/5S/5C (iPod / iPod touch) 等设备
            }else if (screenSize.width == 667){//iPone 6 / 6S 等设备
            }else if (screenSize.width == 736){//iPone 6 Plus / 6S Plus 等设备
            }else{//iPhone 4 / 4S 等设备
            }}}