ios 获取手机序列号

可以通过以下代码获取iOS设备的序列号：

#import <UIKit/UIKit.h>
#import <sys/utsname.h>

NSString* deviceSerialNumber() {
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];

    if ([platform isEqualToString:@"iPhone1,1"])    return @"iPhone 2G (A1203)";
    if ([platform isEqualToString:@"iPhone1,2"])    return @"iPhone 3G (A1241/A1324)";
    if ([platform isEqualToString:@"iPhone2,1"])    return @"iPhone 3GS (A1303/A1325)";
    if ([platform isEqualToString:@"iPhone3,1"])    return @"iPhone 4 (A1332)";
    if ([platform isEqualToString:@"iPhone3,2"])    return @"iPhone 4 (A1332)";
    if ([platform isEqualToString:@"iPhone3,3"])    return @"iPhone 4 (A1349)";
    if ([platform isEqualToString:@"iPhone4,1"])    return @"iPhone 4S (A1387/A1431)";
    if ([platform isEqualToString:@"iPhone5,1"])    return @"iPhone 5 (A1428)";
    if ([platform isEqualToString:@"iPhone5,2"])    return @"iPhone 5 (A1429/A1442)";
    if ([platform isEqualToString:@"iPhone5,3"])    return @"iPhone 5c (A1456/A1532)";
    if ([platform isEqualToString:@"iPhone5,4"])    return @"iPhone 5c (A1507/A1516/A1526/A1529)";
    if ([platform isEqualToString:@"iPhone6,1"])    return @"iPhone 5s (A1453/A1533)";
    if ([platform isEqualToString:@"iPhone6,2"])    return @"iPhone 5s (A1457/A1518/A1528/A1530)";
    if ([platform isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus (A1522/A1524)";
    if ([platform isEqualToString:@"iPhone7,2"])    return @"iPhone 6 (A1549/A1586)";
    if ([platform isEqualToString:@"iPhone8,1"])    return @"iPhone 6s (A1633/A1688/A1691/A1700)";
    if ([platform isEqualToString:@"iPhone8,2"])    return @"iPhone 6s Plus (A1634/A1687/A1690/A1699)";
    if ([platform isEqualToString:@"iPhone8,4"])    return @"iPhone SE (A1662/A1723/A1724)";
    if ([platform isEqualToString:@"iPhone9,1"])    return @"iPhone 7 (A1660/A1779/A1780)";
    if ([platform isEqualToString:@"iPhone9,3"])    return @"iPhone 7 (A1778)";
    if ([platform isEqualToString:@"iPhone9,2"])    return @"iPhone 7 Plus (A1661/A1785/A1786)";
    if ([platform isEqualToString:@"iPhone9,4"])    return @"iPhone 7 Plus (A1784)";
    if ([platform isEqualToString:@"iPhone10,1"] || [platform isEqualToString:@"iPhone10,4"])   return @"iPhone 8 (A1863/A1906)";
    if ([platform isEqualToString:@"iPhone10,2"] || [platform isEqualToString:@"iPhone10,5"])   return @"iPhone 8 Plus (A1864/A1898/A1899)";
    if ([platform isEqualToString:@"iPhone10,3"] || [platform isEqualToString:@"iPhone10,6"])   return @"iPhone X (A1865/A1901)";
    if ([platform isEqualToString:@"iPhone11,2"])  return @"iPhone XS (A2097/A2098)";
    if ([platform isEqualToString:@"iPhone11,4"] || [platform isEqualToString:@"iPhone11,6"])   return @"iPhone XS Max (A1921/A2103)";
    if ([platform isEqualToString:@"iPhone11,8"])  return @"iPhone XR (A1984/A2105)";
    if ([platform isEqualToString:@"iPhone12,1"])  return @"iPhone 11 (A2111/A2223/A2221)";
    if ([platform isEqualToString:@"iPhone12,3"])  return @"iPhone 11 Pro (A2215/A2160/A2217)";
    if ([platform isEqualToString:@"iPhone12,5"])  return @"iPhone 11 Pro Max (A2218/A2161/A2220)";
    if ([platform isEqualToString:@"iPhone12,8"])  return @"iPhone SE 2nd Gen (A2275/A2296/A2298)";
    if ([platform isEqualToString:@"iPhone13,1"])  return @"iPhone 12 mini (A2176/A2398/A2399/A2400)";
    if ([platform isEqualToString:@"iPhone13,2"])  return @"iPhone 12 (A2402/A2403/A2404/A2405)";
    if ([platform isEqualToString:@"iPhone13,3"])  return @"iPhone 12 Pro (A2341/A2406/A2407/A2408)";
    if ([platform isEqualToString:@"iPhone13,4"])  return @"iPhone 12 Pro Max (A2342/A2410/A2411/A2412)";

    return nil;
}

NSString* getDeviceSerialNumber() {
    UIDevice *device = [UIDevice currentDevice];
    NSString *deviceSerialNumber = nil;

    if ([device respondsToSelector:@selector(identifierForVendor)]) {
        deviceSerialNumber = [[device identifierForVendor] UUIDString];
    } else {
        deviceSerialNumber = (NSString*)CFBridgingRelease(CFUUIDCreateString(NULL, CFUUIDCreate(NULL)));
    }

    return deviceSerialNumber;
}

其中，`getDeviceSerialNumber` 返回的是设备的唯一标识符，可以用作设备的序列号。