import "sys/utsname.h" 头文件

方法 + (NSString*)deviceString {
// 需要#import "sys/utsname.h"
struct utsname systemInfo;
uname(&systemInfo);
NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];

//iPhone 系列
if ([deviceModel isEqualToString:@"iPhone1,1"]) return @"iPhone 1G";
if ([deviceModel isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";
if ([deviceModel isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS";
if ([deviceModel isEqualToString:@"iPhone3,1"]) return @"iPhone 4";
if ([deviceModel isEqualToString:@"iPhone3,2"]) return @"Verizon iPhone 4";
if ([deviceModel isEqualToString:@"iPhone4,1"]) return @"iPhone 4S";
if ([deviceModel isEqualToString:@"iPhone5,1"]) return @"iPhone 5";
if ([deviceModel isEqualToString:@"iPhone5,2"]) return @"iPhone 5";
if ([deviceModel isEqualToString:@"iPhone5,3"]) return @"iPhone 5C";
if ([deviceModel isEqualToString:@"iPhone5,4"]) return @"iPhone 5C";
if ([deviceModel isEqualToString:@"iPhone6,1"]) return @"iPhone 5S";
if ([deviceModel isEqualToString:@"iPhone6,2"]) return @"iPhone 5S";
if ([deviceModel isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus";
if ([deviceModel isEqualToString:@"iPhone7,2"]) return @"iPhone 6";
if ([deviceModel isEqualToString:@"iPhone8,1"]) return @"iPhone 6s";
if ([deviceModel isEqualToString:@"iPhone8,2"]) return @"iPhone 6s Plus";
if ([deviceModel isEqualToString:@"iPhone8,4"]) return @"iPhone SE";
if ([deviceModel isEqualToString:@"iPhone9,1"]) return @"iPhone 7";
if ([deviceModel isEqualToString:@"iPhone9,3"]) return @"iPhone 7";
if ([deviceModel isEqualToString:@"iPhone9,2"]) return @"iPhone 7 Plus";
if ([deviceModel isEqualToString:@"iPhone9,4"]) return @"iPhone 7 Plus";

//iPod 系列
if ([deviceModel isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
if ([deviceModel isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
if ([deviceModel isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
if ([deviceModel isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
if ([deviceModel isEqualToString:@"iPod5,1"])      return @"iPod Touch 5G";

//iPad 系列
if ([deviceModel isEqualToString:@"iPad1,1"])      return @"iPad";
if ([deviceModel isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";
if ([deviceModel isEqualToString:@"iPad2,2"])      return @"iPad 2 (GSM)";
if ([deviceModel isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";
if ([deviceModel isEqualToString:@"iPad2,4"])      return @"iPad 2 (32nm)";
if ([deviceModel isEqualToString:@"iPad2,5"])      return @"iPad mini (WiFi)";
if ([deviceModel isEqualToString:@"iPad2,6"])      return @"iPad mini (GSM)";
if ([deviceModel isEqualToString:@"iPad2,7"])      return @"iPad mini (CDMA)";

if ([deviceModel isEqualToString:@"iPad3,1"])      return @"iPad 3(WiFi)";
if ([deviceModel isEqualToString:@"iPad3,2"])      return @"iPad 3(CDMA)";
if ([deviceModel isEqualToString:@"iPad3,3"])      return @"iPad 3(4G)";
if ([deviceModel isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";
if ([deviceModel isEqualToString:@"iPad3,5"])      return @"iPad 4 (4G)";
if ([deviceModel isEqualToString:@"iPad3,6"])      return @"iPad 4 (CDMA)";

if ([deviceModel isEqualToString:@"iPad4,1"])      return @"iPad Air";
if ([deviceModel isEqualToString:@"iPad4,2"])      return @"iPad Air";
if ([deviceModel isEqualToString:@"iPad4,3"])      return @"iPad Air";
if ([deviceModel isEqualToString:@"iPad5,3"])      return @"iPad Air 2";
if ([deviceModel isEqualToString:@"iPad5,4"])      return @"iPad Air 2";
if ([deviceModel isEqualToString:@"i386"])         return @"Simulator";
if ([deviceModel isEqualToString:@"x86_64"])       return @"Simulator";

if ([deviceModel isEqualToString:@"iPad4,4"]
    ||[deviceModel isEqualToString:@"iPad4,5"]
    ||[deviceModel isEqualToString:@"iPad4,6"])      return @"iPad mini 2";

if ([deviceModel isEqualToString:@"iPad4,7"]
    ||[deviceModel isEqualToString:@"iPad4,8"]
    ||[deviceModel isEqualToString:@"iPad4,9"])      return @"iPad mini 3";
        
        NSLog(@"NOTE: Unknown device type: %@", deviceString);  
        return deviceString;  
    }