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

    if ([deviceString isEqualToString:@"iPhone3,1"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,2"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,3"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone4,1"])    return @"iPhone 4s";
    
    if ([deviceString isEqualToString:@"iPhone5,1"])    return @"iPhone 5";
    if ([deviceString isEqualToString:@"iPhone5,2"])    return @"iPhone 5";
    if ([deviceString isEqualToString:@"iPhone5,3"])    return @"iPhone 5c";
    if ([deviceString isEqualToString:@"iPhone5,4"])    return @"iPhone 5c";
    
    if ([deviceString isEqualToString:@"iPhone6,1"])    return @"iPhone 5s";
    if ([deviceString isEqualToString:@"iPhone6,2"])    return @"iPhone 5s";
    
    if ([deviceString isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
    if ([deviceString isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
    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";
    if ([deviceString isEqualToString:@"iPhone9,3"])    return @"iPhone 7";
    if ([deviceString isEqualToString:@"iPhone9,4"])    return @"iPhone Plus";
    
    if ([deviceString isEqualToString:@"iPhone10,1"])    return @"iPhone 8";
    if ([deviceString isEqualToString:@"iPhone10,2"])    return @"iPhone 8 Plus";
    if ([deviceString isEqualToString:@"iPhone10,3"])    return @"iPhone X global";
    if ([deviceString isEqualToString:@"iPhone10,4"])    return @"iPhone 8";
    if ([deviceString isEqualToString:@"iPhone10,5"])    return @"iPhone 8 Plus";
    if ([deviceString isEqualToString:@"iPhone10,6"])    return @"iPhone X GSM";
    
    if ([deviceString isEqualToString:@"iPhone11,2"])    return @"iPhone XS";
    if ([deviceString isEqualToString:@"iPhone11,4"])    return @"iPhone XS Max China";
    if ([deviceString isEqualToString:@"iPhone11,6"])    return @"iPhone XS Max";
    if ([deviceString isEqualToString:@"iPhone11,8"])    return @"iPhone XR";
    
    if ([deviceString isEqualToString:@"iPhone12,1"])    return @"iPhone 11";
    if ([deviceString isEqualToString:@"iPhone12,2"])    return @"iPhone 11 pro";
    if ([deviceString isEqualToString:@"iPhone12,5"])    return @"iPhone 11 pro Max";
    if([deviceString  isEqualToString:@"iPhone13,1"]) return @"iPhone 12 mini";
    if([deviceString  isEqualToString:@"iPhone13,2"]) return @"iPhone 12";
    if([deviceString isEqualToString:@"iPhone13,3"]) return @"iPhone 12 Pro";
    if([deviceString isEqualToString:@"iPhone13,4"]) return @"iPhone 12 Pro Max";
    if ([deviceString isEqualToString:@"iPhone14,4"]) return @"iPhone 13 mini";
    if ([deviceString isEqualToString:@"iPhone14,5"]) return @"iPhone 13";
    if ([deviceString isEqualToString:@"iPhone14,2"]) return @"iPhone 13 Pro";
    if ([deviceString isEqualToString:@"iPhone14,3"]) return @"iPhone 13 Pro Max";

    return deviceString;