If you’ve got an iPhone 6s or later model, there are actually a lot of neat little tricks hidden behind 3D Touch gestures. While you probably already know that 3D Touching on a normal app icon will show a menu of actions for many apps, sometimes along with a widget in iOS 10, there’s actually a useful 3D Touch feature for folders as well. Although in most cases, 3D Touching on a folder will just give you a “Rename” option,…