iOS iPhoneX判断

+ (BOOL)is_iPhoneX
{
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    return IS_OS11 && ([deviceString isEqualToString:@"iPhone10,3"] || [deviceString isEqualToString:@"iPhone10,6"]) ;
}

#define isPhoneX_bm ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)