The full Insta DP (or the main profile photo) is too small to help you recognize the person. The smallest icons can’t get converted into the full size profile pictures by default – so is it possible to see them somehow? But you don’t want to fail when trying to know who sends you a follow request or a DM request. Following in response may be not what you want. Users of Instagram who protect their content make the profile unavailable for unfamiliar users to see. The only method is inspecting the profile picture in full size via web-services. If you carefully track everyone who sends requests to follow your account. Sometimes when browsing the IG app, you may not know who is sending a message request – the Instagram profile picture (small circle in the upper left corner on your account) can’t be zoomed in by default.
