iOS 判断当前手机型号，更新到 iphone 12 Pro max

+ (NSString*)deviceVersion{

    structutsnamesystemInfo;

    uname(&systemInfo);

    NSString*phoneType = [NSString stringWithCString:systemInfo.machine encoding:NSASCIIStringEncoding];

    if([phoneType  isEqualToString:@"iPhone1,1"])  return@"iPhone 2G";

    if([phoneType  isEqualToString:@"iPhone1,2"])  return@"iPhone 3G";

    if([phoneType  isEqualToString:@"iPhone2,1"])  return @"iPhone 3GS";

    if([phoneType  isEqualToString:@"iPhone3,1"])  return@"iPhone 4";

    if([phoneType  isEqualToString:@"iPhone3,2"])  return@"iPhone 4";

    if([phoneType  isEqualToString:@"iPhone3,3"])  return@"iPhone 4";

    if([phoneType  isEqualToString:@"iPhone4,1"])  return@"iPhone 4s";

    if([phoneType  isEqualToString:@"iPhone5,1"])  return@"iPhone 5";

    if([phoneType  isEqualToString:@"iPhone5,2"])  return@"iPhone 5";

    if([phoneType  isEqualToString:@"iPhone5,3"])  return@"iPhone 5c";

    if([phoneType  isEqualToString:@"iPhone5,4"])  return@"iPhone 5c";

    if([phoneType  isEqualToString:@"iPhone6,1"])  return@"iPhone 5s";

    if([phoneType  isEqualToString:@"iPhone6,2"])  return@"iPhone 5s";

    if([phoneType  isEqualToString:@"iPhone7,1"])  return @"iPhone 6 Plus";

    if([phoneType  isEqualToString:@"iPhone7,2"])  return@"iPhone 6";

    if([phoneType  isEqualToString:@"iPhone8,1"])  return@"iPhone 6s";

    if([phoneType  isEqualToString:@"iPhone8,2"])  return @"iPhone 6s Plus";

    if([phoneType  isEqualToString:@"iPhone8,4"])  return@"iPhone SE";

    if([phoneType  isEqualToString:@"iPhone12,8"])  return @"iPhone SE (2nd generation)";

    if([phoneType  isEqualToString:@"iPhone9,1"])  return@"iPhone 7";

    if([phoneType  isEqualToString:@"iPhone9,2"])  return @"iPhone 7 Plus";

    if([phoneType  isEqualToString:@"iPhone10,1"]) return @"iPhone 8";

    if([phoneType  isEqualToString:@"iPhone10,4"]) return @"iPhone 8";

    if([phoneType  isEqualToString:@"iPhone10,2"]) return @"iPhone 8 Plus";

    if([phoneType  isEqualToString:@"iPhone10,5"]) return @"iPhone 8 Plus";

    if([phoneType  isEqualToString:@"iPhone10,3"]) return @"iPhone X";

    if([phoneType  isEqualToString:@"iPhone10,6"]) return @"iPhone X";

    if([phoneType  isEqualToString:@"iPhone11,8"]) return @"iPhone XR";

    if([phoneType  isEqualToString:@"iPhone11,2"]) return @"iPhone XS";

    if([phoneType  isEqualToString:@"iPhone11,4"]) return @"iPhone XS Max";

    if([phoneType  isEqualToString:@"iPhone11,6"]) return @"iPhone XS Max";

    if([phoneType  isEqualToString:@"iPhone12,1"]) return @"iPhone 11";

    if([phoneType  isEqualToString:@"iPhone12,3"]) return @"iPhone 11 Pro";

    if([phoneType  isEqualToString:@"iPhone12,5"]) return @"iPhone 11 Pro Max";

    if([phoneType  isEqualToString:@"iPhone13,1"]) return @"iPhone 12 mini";

    if([phoneType  isEqualToString:@"iPhone13,2"]) return @"iPhone 12";

    if([phoneType  isEqualToString:@"iPhone13,3"]) return @"iPhone 12 Pro";

    if([phoneType  isEqualToString:@"iPhone13,4"]) return @"iPhone 12 Pro Max";

     returnphoneType;

}