这些普通但是也很说适用的信息

1.查看当前设备的型号
+ (NSString *)platform {
    struct utsname systemInfo;
    uname(&systemInfo);

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

    if ([platform isEqualToString:@"iPhone1,1"]) return @"iPhone 2G";
    if ([platform isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";
    if ([platform isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS";
    if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4";
    if ([platform isEqualToString:@"iPhone3,2"]) return @"iPhone 4";
    if ([platform isEqualToString:@"iPhone3,3"]) return @"iPhone 4";
    if ([platform isEqualToString:@"iPhone4,1"]) return @"iPhone 4S";
    if ([platform isEqualToString:@"iPhone5,1"]) return @"iPhone 5";
    if ([platform isEqualToString:@"iPhone5,2"]) return @"iPhone 5";
    if ([platform isEqualToString:@"iPhone5,3"]) return @"iPhone 5c";
    if ([platform isEqualToString:@"iPhone5,4"]) return @"iPhone 5c";
    if ([platform isEqualToString:@"iPhone6,1"]) return @"iPhone 5s";
    if ([platform isEqualToString:@"iPhone6,2"]) return @"iPhone 5s";
    if ([platform isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus";
    if ([platform isEqualToString:@"iPhone7,2"]) return @"iPhone 6";
    if ([platform isEqualToString:@"iPhone8,1"]) return @"iPhone 6s";
    if ([platform isEqualToString:@"iPhone8,2"]) return @"iPhone 6s Plus";
    if ([platform isEqualToString:@"iPhone8,4"]) return @"iPhone SE";

    if ([platform isEqualToString:@"iPod1,1"])   return @"iPod Touch 1G";
    if ([platform isEqualToString:@"iPod2,1"])   return @"iPod Touch 2G";
    if ([platform isEqualToString:@"iPod3,1"])   return @"iPod Touch 3G";
    if ([platform isEqualToString:@"iPod4,1"])   return @"iPod Touch 4G";
    if ([platform isEqualToString:@"iPod5,1"])   return @"iPod Touch 5G";
    if ([platform isEqualToString:@"iPod7,1"])   return @"iPod Touch 6G";

    if ([platform isEqualToString:@"iPad1,1"])   return @"iPad 1G";

    if ([platform isEqualToString:@"iPad2,1"])   return @"iPad 2";
    if ([platform isEqualToString:@"iPad2,2"])   return @"iPad 2";
    if ([platform isEqualToString:@"iPad2,3"])   return @"iPad 2";
    if ([platform isEqualToString:@"iPad2,4"])   return @"iPad 2";
    if ([platform isEqualToString:@"iPad2,5"])   return @"iPad Mini 1G";
    if ([platform isEqualToString:@"iPad2,6"])   return @"iPad Mini 1G";
    if ([platform isEqualToString:@"iPad2,7"])   return @"iPad Mini 1G";

    if ([platform isEqualToString:@"iPad3,1"])   return @"iPad 3";
    if ([platform isEqualToString:@"iPad3,2"])   return @"iPad 3";
    if ([platform isEqualToString:@"iPad3,3"])   return @"iPad 3";
    if ([platform isEqualToString:@"iPad3,4"])   return @"iPad 4";
    if ([platform isEqualToString:@"iPad3,5"])   return @"iPad 4";
    if ([platform isEqualToString:@"iPad3,6"])   return @"iPad 4";

    if ([platform isEqualToString:@"iPad4,1"])   return @"iPad Air";
    if ([platform isEqualToString:@"iPad4,2"])   return @"iPad Air";
    if ([platform isEqualToString:@"iPad4,3"])   return @"iPad Air";

    if ([platform isEqualToString:@"iPad4,4"])   return @"iPad Mini 2G";
    if ([platform isEqualToString:@"iPad4,5"])   return @"iPad Mini 2G";
    if ([platform isEqualToString:@"iPad4,6"])   return @"iPad Mini 2G";
    if ([platform isEqualToString:@"iPad4,7"])   return @"iPad Mini 3G";
    if ([platform isEqualToString:@"iPad4,8"])   return @"iPad Mini 3G";
    if ([platform isEqualToString:@"iPad4,9"])   return @"iPad Mini 3G";
    if ([platform isEqualToString:@"iPad5,1"])   return @"iPad Mini 4G";
    if ([platform isEqualToString:@"iPad5,2"])   return @"iPad Mini 4G";
    if ([platform isEqualToString:@"iPad5,3"])   return @"iPad Air 2";
    if ([platform isEqualToString:@"iPad5,4"])   return @"iPad Air 2";
    if ([platform isEqualToString:@"iPad6,3"])   return @"iPad Pro (9.7 inch)";
    if ([platform isEqualToString:@"iPad6,4"])   return @"iPad Pro (9.7 inch)";
    if ([platform isEqualToString:@"iPad6,7"])   return @"iPad Pro (12.9 inch)";
    if ([platform isEqualToString:@"iPad6,8"])   return @"iPad Pro (12.9 inch)";

    if ([platform isEqualToString:@"i386"])      return @"iPhone Simulator";
    if ([platform isEqualToString:@"x86_64"])    return @"iPhone Simulator";
    return platform;
}