Congrats @flo_rahil 👏
I love the design, but in the real android development only a couple are feasible, as described.
Ringtone volume widget
Android widgets are meant to do “simple” tasks, and a lot of interactions are just impossible (seekbars are not supported, custom views such a circular seekbars even less 😜).
Real-time noise level
To catch sounds you will need to continuously use the microphone, and can be used only in a single instance to avoid other apps requesting it (phone calls?) just like happens with camera.
Speed dial
Feasible technically, but a lot harder than it might look. In widgets you don’t have a navigation system, and change the view to support different screens is kinda a nightmare.
Single screen and a settings activity would be more manageable (but yeah, half of the concept would be lost).
Conclusion
Sometimes I wish I was not an Android developer, because this doesn’t let me fully enjoy “concepts” if they are not possibly feasible.
I really loved the designs, but also I become disappointed very soon when I realize they cannot shine in real life.
I hope Nothing will open its own widget API (that is different from the android one) to let us cook cool stuff, and bring those concepts into reality.
And I am disappointed no one asks about it.