A couple of days back, Facebook started enhancing photos automatically that are uploaded to the social network using an iPhone or iPad, using smart algorithms in an attempt to make them look better. However, if you don’t like the new feature, there’s an easy way to disable it completely (via iPhoneHacks).
Simply follow these steps to stop Facebook from automatically enhancing your uploaded photos:
Tap the More tab at the bottom right corner in the Facebook app.
Scroll down and navigate to Settings > Videos and Photos.
Tap on the toggle for Enhance Automatically to disable it.
That’s it. Enjoy!