Your device is not running on the latest iOS version. Please make sure that your device is running on iOS version 14.2.
No, SystemGuard doesn't protect your device against viruses, because by definition there aren't any viruses for iOS devices.
No, SystemGuard merely detects if certain parts of your device's security are compromised and notifies you about them.
SystemGuard will tell you exactly what kind of issue may be compromising your device's security.
If you are unsure, you can always send us a Tweet @SystemGuardApp or contact us privately by e-mail.
If you encounter this error, SystemGuard was unable to determine the latest iOS version for your device. This usually occurs if you device's network connection is unavailable or very slow (for example overloaded WiFi or being on an Edge connection).
Please try to check for the latest version again either later or from a different network connection. In rare cases it may also be server issues on our side.
While your "free" amount of RAM may be quite low, in total you have to sum up both "free" and "inactive" RAM.
For more information, please read Apple's documentation about Mac OS X's "Activity Monitor", which is very similar to iOS's memory management, here