In Android, changing the UI is very possible, I do not mean changing of wallpaper or theme, this means changing the default full Android experience to a different UI. But there is also the default stock Android which is the best and most clean experience of Android with no bloatware, bugs, and extra features. Android manufacturers have used several customized interface for their smartphones, they differ, for instance, Samsung has it’s OneUI 1.0 and 2.0 interface which brings extra features to Android such as dark mode and easy navigation, other Android devices also have their customized UI names like Xiaomi’s MIUI, OnePluses’ Oxygen, and Infinix’s XOX. Odin for MacOS: Android allows you to modify your system from the default interface to a customized one, this is something iOS users aren’t allowed to do that is why all their UI are the same.