The Files app was first introduced in the iPhone with the release of iOS 11. In the two years since its unveiling, we have enjoyed a more desktop-class experience because there is finally a decent file manager for mobile devices. That said, there was always a big problem with the Files app, a problem that iOS 13 resolves forever.
Files work just like any other file management system. You can create folders, place documents in those folders, and move and sort your content as needed. That said, before iOS 13 you couldn't create new folders at the appropriate "On my iPhone" location. That meant that all new folders were mandatory for iCloud or external storage services ̵
That is now a thing of the past. To create a new folder in "On My iPhone", simply long-press any blank space and then tap "New Folder" in the context menu that appears. You can also swipe down on the screen to display the omission sign icon (•••). Tap on it and then press "New folder" in the action sheet. Whichever way you choose, enter a name for the folder when prompted. Tap "Done" and presto – you have just created a locally saved folder directly on your iPhone.
It is time for Apple to add this feature to Files. Although iCloud is not necessarily unsafe it cannot provide the same level of security as local storage (provided you have a strong access code). You can create and save folders anywhere in Files, locally or in the cloud. It's up to you now.
Don't miss it: Create a strong (or stronger) access code for your iPhone