Here’s a quick guide to viewing and saving a Facebook profile picture in full size (original resolution), not the small thumbnail. Method 1: On a Computer (Browser) Step 1: Go to the profile of the person whose picture you want.
Open Safari (iOS) or Chrome (Android). Go to m.facebook.com (mobile web version). facebook profile picture full size
A pop-up lightbox will open. By default, Facebook shows a medium-sized version (around 480×480 or 720×720 pixels). Here’s a quick guide to viewing and saving