As said in the title, how do you fix it? And no, its not a problem I can fix using my fingers and zoom in/ zoom out, it's already fully zoomed out. When I'm on the catching screen, the ball is cut off at the bottom because its so zoomed in.
Read more: https://samsungus.org/qa/tab/pokemon-go-is-really-zoomed-in-big-on-my-samsung-galaxy.html