头文件

#import <Foundation/Foundation.h>typedef NS_ENUM(NSInteger,DeviceType) {Unknown = 0,Simulator,IPhone_1G,          //基本不用IPhone_3G,          //基本不用IPhone_3GS,         //基本不用IPhone_4,           //基本不用IPhone_4s,          //基本不用IPhone_5,IPhone_5C,IPhone_5S,IPhone_SE,IPhone_6,IPhone_6P,IPhone_6s,IPhone_6s_P,IPhone_7,IPhone_7P,IPhone_8,IPhone_8P,IPhone_X,
};@interface JDDeviceUtils : NSObject+ (DeviceType)deviceType;@end

.m文件

#import "JDDeviceUtils.h"
#import <sys/utsname.h>@implementation JDDeviceUtils+ (DeviceType)deviceType{struct utsname systemInfo;uname(&systemInfo);NSString *platform = [NSString stringWithCString:systemInfo.machineencoding:NSUTF8StringEncoding];//simulatorif ([platform isEqualToString:@"i386"])          return Simulator;if ([platform isEqualToString:@"x86_64"])        return Simulator;//iPhoneif ([platform isEqualToString:@"iPhone1,1"])     return IPhone_1G;if ([platform isEqualToString:@"iPhone1,2"])     return IPhone_3G;if ([platform isEqualToString:@"iPhone2,1"])     return IPhone_3GS;if ([platform isEqualToString:@"iPhone3,1"])     return IPhone_4;if ([platform isEqualToString:@"iPhone3,2"])     return IPhone_4;if ([platform isEqualToString:@"iPhone4,1"])     return IPhone_4s;if ([platform isEqualToString:@"iPhone5,1"])     return IPhone_5;if ([platform isEqualToString:@"iPhone5,2"])     return IPhone_5;if ([platform isEqualToString:@"iPhone5,3"])     return IPhone_5C;if ([platform isEqualToString:@"iPhone5,4"])     return IPhone_5C;if ([platform isEqualToString:@"iPhone6,1"])     return IPhone_5S;if ([platform isEqualToString:@"iPhone6,2"])     return IPhone_5S;if ([platform isEqualToString:@"iPhone7,1"])     return IPhone_6P;if ([platform isEqualToString:@"iPhone7,2"])     return IPhone_6;if ([platform isEqualToString:@"iPhone8,1"])     return IPhone_6s;if ([platform isEqualToString:@"iPhone8,2"])     return IPhone_6s_P;if ([platform isEqualToString:@"iPhone8,4"])     return IPhone_SE;if ([platform isEqualToString:@"iPhone9,1"])     return IPhone_7;if ([platform isEqualToString:@"iPhone9,3"])     return IPhone_7;if ([platform isEqualToString:@"iPhone9,2"])     return IPhone_7P;if ([platform isEqualToString:@"iPhone9,4"])     return IPhone_7P;if ([platform isEqualToString:@"iPhone10,1"])    return IPhone_8;if ([platform isEqualToString:@"iPhone10,4"])    return IPhone_8;if ([platform isEqualToString:@"iPhone10,2"])    return IPhone_8P;if ([platform isEqualToString:@"iPhone10,5"])    return IPhone_8P;if ([platform isEqualToString:@"iPhone10,3"])    return IPhone_X;if ([platform isEqualToString:@"iPhone10,6"])    return IPhone_X;return Unknown;}