While often referred to as a "download," the Guard is actually a feature you activate within the Facebook environment. Depending on your region, you may need a workaround if the option isn't natively visible. 1. Native Method (Android & iOS)
On many Android devices, the feature actively blocks attempts to take a screenshot of your profile picture.
Only you and your friends can tag your profile picture.
Most users will be unable to download, share, or send your profile picture in a message.