iOS开发中有时需要获取具体的手机型号和系统版本，代码入下：
1、首先导入头文件：
<sys/utsname.h>
#import <sys/utsname.h>
2、复制下面的代码：
struct utsname systemInfo;
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:@"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";
3、判断手机的系统版本：
NSString* systemVersion = [[UIDevice currentDevice] systemVersion];
ps:现在系统会自动提示：
if (@available(iOS 11.0, *)) {
//
}
