Android originally meant freedom. It means that if you already have some more specialized knowledge, you can bring it as you want, to your measures. You can replace the default launchers, keyboards, media players with third party apps, download any launcher you want from the Play Store and much more. Each manufacturer additionally has its own skin with its own unique features thus making people go to what they think serves them best.
On Android, at device level, you have endless options. You can choose the size, the list of features that suits you and the price category that interests you. That is, there is a telephone at every price. Unfortunately this is something you will not find on the iPhone. They are expensive (and some Android are expensive of course) and their price drops in the next generations.
USB-C is universal. Android relies heavily on USB C ports and this is especially convenient, especially for those who want to carry only one cable. USB C is appearing on more and more PCs. It is the single port implementation on which the industry is working, while opening the doors to fast charging technologies.
Android also has real multitasking out of the box, with apps running in the background. So if you send files and at that time you need to make a call or answer an email, the sending of files will not stop. This happens on iOS and the applications that can run in the background are minimal. In essence, iOS freezes applications running in the background, cutting off every process you do. Try sending a file with send Anywhere and exit the app (or just close the screen for a few seconds) to make a call. When you return to Send Anywhere the sending will be stopped, which is why the application keeps the screen open when transferring files.
Android has Widgets. To catch you, iOS has it, but it's basically what Apple wants and we would not say that they are so useful. Widgets on Android offer information without having to open the application, while they also have extra functions.
The main advantage of Android is the notification system and their management. You can more easily chase a notification, choose not to receive notifications from one application forever or for a certain period of time, while many times we have the option for extra functions, such as replying to messages, directly from the notification. After all, Google has been using them for much longer and has reached much higher levels of functionality.
Another advantage of android is the App Drawer. There are all our applications, sorted alphabetically and very well organized. For the ones we use most often we have the Home Screen, where we can organize everything based on the use we make. In App Drawer, however, we can choose the applications to be sorted based on the name or date of installation, offering complete control to the user to set up the phone for his needs.
Finally we have a number of unlock options, face unlock, fingerprint, pattern, pin, unlock via Bluetooth etc...There are certainly many more that can be mentioned.