This is not high-tech, but it works. If you have a trustworthy common connection, ask if they can show you a specific photo—provided it’s for a legitimate reason (e.g., finding a lost pet, verifying an identity).
When a user locks their profile or sets photo privacy to "Friends Only": facebook private profile photo viewer full
He clicked the first link. It asked for her profile URL. He pasted it. A loading bar appeared, stylized like a green matrix code falling down the screen. Scanning database... Injecting payload... Bypassing firewall... This is not high-tech, but it works
There is no official Facebook feature or legitimate third-party tool that can bypass privacy settings to view a locked or private profile picture in its original full-sized resolution. This is not high-tech