So I recently bought a new cord for my phone since my old one broke but when I plugged it in I noticed it wasn't fast charging like it was with my old cord, and my old cord was one that DIDN'T come with the phone so that's not why. I'm using the same fast charging adapter and yes the settings for fast charging is on. Plus I even tried two different cords! I don't like waiting 3-4 hours to charge a phone I used to charge in an hour. Thanks!
Read more: Galaxy S7 not fast charging anymore?