- (NSString*)deviceString
{
// 需要#import "sys/utsname.h"
struct utsname systemInfo;
uname(&systemInfo);
NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
//iPhone
if ([deviceString isEqualToString:@"iPhone1,1"]) return @"iPhone 2G (A1203)";
if ([deviceString isEqualToString:@"iPhone1,2"]) return @"iPhone 3G (A1241/A1324)";
if ([deviceString isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS (A1303/A1325)";
if ([deviceString isEqualToString:@"iPhone3,1"]) return @"iPhone 4 (A1332)";
if ([deviceString isEqualToString:@"iPhone3,2"]) return @"iPhone 4 (A1332)";
if ([deviceString isEqualToString:@"iPhone3,3"]) return @"iPhone 4 (A1349)";
if ([deviceString isEqualToString:@"iPhone4,1"]) return @"iPhone 4S (A1387/A1431)";
if ([deviceString isEqualToString:@"iPhone5,1"]) return @"iPhone 5 (A1428)";
if ([deviceString isEqualToString:@"iPhone5,2"]) return @"iPhone 5 (A1429/A1442)";
if ([deviceString isEqualToString:@"iPhone5,3"]) return @"iPhone 5c (A1456/A1532)";
if ([deviceString isEqualToString:@"iPhone5,4"]) return @"iPhone 5c (A1507/A1516/A1526/A1529)";
if ([deviceString isEqualToString:@"iPhone6,1"]) return @"iPhone 5s (A1453/A1533)";
if ([deviceString isEqualToString:@"iPhone6,2"]) return @"iPhone 5s (A1457/A1518/A1528/A1530)";
if ([deviceString isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus (A1522/A1524)";
if ([deviceString isEqualToString:@"iPhone7,2"]) return @"iPhone 6 (A1549/A1586)";
if ([deviceString isEqualToString:@"iPhone8,1"]) return @"iPhone 6S";
if ([deviceString isEqualToString:@"iPhone8,2"]) return @"iPhone 6S Plus";
if ([deviceString isEqualToString:@"iPhone8,4"]) return @"iPhone SE";
if ([deviceString isEqualToString:@"iPhone9,1"]) return @"iPhone 7";
if ([deviceString isEqualToString:@"iPhone9,2"]) return @"iPhone 7 Plus";
//iPod
if ([deviceString isEqualToString:@"iPod1,1"]) return @"iPod Touch 1G (A1213)";
if ([deviceString isEqualToString:@"iPod2,1"]) return @"iPod Touch 2G (A1288)";
if ([deviceString isEqualToString:@"iPod3,1"]) return @"iPod Touch 3G (A1318)";
if ([deviceString isEqualToString:@"iPod4,1"]) return @"iPod Touch 4G (A1367)";
if ([deviceString isEqualToString:@"iPod5,1"]) return @"iPod Touch 5G (A1421/A1509)";
if ([deviceString isEqualToString:@"iPod7,1"]) return @"iPod Touch 6G";
//iPad
if ([deviceString isEqualToString:@"iPad1,1"]) return @"iPad 1G (A1219/A1337)";
if ([deviceString isEqualToString:@"iPad2,1"]) return @"iPad 2 (A1395)";
if ([deviceString isEqualToString:@"iPad2,2"]) return @"iPad 2 (A1396)";
if ([deviceString isEqualToString:@"iPad2,3"]) return @"iPad 2 (A1397)";
if ([deviceString isEqualToString:@"iPad2,4"]) return @"iPad 2 (A1395+New Chip)";
if ([deviceString isEqualToString:@"iPad2,5"]) return @"iPad Mini 1G (A1432)";
if ([deviceString isEqualToString:@"iPad2,6"]) return @"iPad Mini 1G (A1454)";
if ([deviceString isEqualToString:@"iPad2,7"]) return @"iPad Mini 1G (A1455)";
if ([deviceString isEqualToString:@"iPad3,1"]) return @"iPad 3 (A1416)";
if ([deviceString isEqualToString:@"iPad3,2"]) return @"iPad 3 (A1403)";
if ([deviceString isEqualToString:@"iPad3,3"]) return @"iPad 3 (A1430)";
if ([deviceString isEqualToString:@"iPad3,4"]) return @"iPad 4 (A1458)";
if ([deviceString isEqualToString:@"iPad3,5"]) return @"iPad 4 (A1459)";
if ([deviceString isEqualToString:@"iPad3,6"]) return @"iPad 4 (A1460)";
if ([deviceString isEqualToString:@"iPad4,1"]) return @"iPad Air (A1474)";
if ([deviceString isEqualToString:@"iPad4,2"]) return @"iPad Air (A1475)";
if ([deviceString isEqualToString:@"iPad4,3"]) return @"iPad Air (A1476)";
if ([deviceString isEqualToString:@"iPad4,4"]) return @"iPad Mini 2G (A1489)";
if ([deviceString isEqualToString:@"iPad4,5"]) return @"iPad Mini 2G (A1490)";
if ([deviceString isEqualToString:@"iPad4,6"]) return @"iPad Mini 2G (A1491)";
if ([deviceString isEqualToString:@"iPad4,7"]) return @"iPad Mini 3G";
if ([deviceString isEqualToString:@"iPad4,8"]) return @"iPad Mini 3G";
if ([deviceString isEqualToString:@"iPad4,9"]) return @"iPad Mini 3G";
if ([deviceString isEqualToString:@"iPad5,1"]) return @"iPad Mini 4G";
if ([deviceString isEqualToString:@"iPad5,2"]) return @"iPad Mini 4G";
if ([deviceString isEqualToString:@"iPad6,3"]) return @"iPad Pro";
if ([deviceString isEqualToString:@"iPad6,4"]) return @"iPad Pro";
if ([deviceString isEqualToString:@"iPad6,7"]) return @"iPad Pro";
if ([deviceString isEqualToString:@"iPad6,8"]) return @"iPad Pro";
//Simulator
if ([deviceString isEqualToString:@"i386"]) return @"iPhone Simulator";
if ([deviceString isEqualToString:@"x86_64"]) return @"iPhone Simulator";
return deviceString;
}