What's a good Android app for deeply customizing the look and feel of my Samsung phone's user interface, including the lock screen, quick settings panel, and recent apps screen?

Good Lock is a fantastic Android app, specifically designed for Samsung devices, that allows for extensive customization of your phone's UI. It provides a suite of modules that let you personalize various aspects of your phone's interface, going far beyond the standard theming options. You can tweak the lock screen style, change the appearance and functionality of the quick settings panel, modify the recent apps screen layout, and even customize the navigation bar.

For example, with modules like LockStar, you can reposition elements on the lock screen and add custom widgets. QuickStar lets you rearrange and restyle the quick settings panel icons. Task Changer offers different layouts for the recent apps screen, such as a vertical list or a carousel view. NavStar allows customizing the navigation bar buttons. To use Good Lock, download it from the Galaxy Store, then explore the available modules and install the ones that interest you. Each module has its own settings and options for customization. This level of control allows you to create a truly unique and personalized user experience on your Samsung phone.