Among your first rules, keep your smartphone and tablet updated, together with the applications installed on them, to obtain the latest features introduced. But recently, in the latest update you received for the app you use often, you noticed some changes that you don't like. I'm not talking only about the graphical interface, but above all about some of its features that no longer work properly, due to some bug. What can you do to fix the problem? How to go back to an older version of an app? I'll explain it to you shortly.