I can access Control Center on an iPhone Xs Max by simply holding the phone in one hand, and swiping down from the top left corner with my finger on THE OTHER HAND. Your tip is for those who insist on operating their iPhone one-handed all the time. If you do that, perhaps the slightly smaller iPhone X, Xs, or Xr would be more suitable to own. After all, in this article you refer to the iPhone Xs Max as a "phablet", so that begs the question: Do you operate your iPads (or other "tablets") one-handed? Most likely NOT...