Nearly all features in Android phones are their own app so you can customize the layout.
How messy! And I'm scared to ask what a 'widget' is, so I won't.
A widget is a generic, theoretical unit of economic production, as in the classic economics problem:
"If Company A manufactures 4,000 widgets and Company B produces 10,000 widgets, causing moocher politicians to outlaw 'unfair competition' and confiscate 90% of widgets from both companies, how many hunky industrialists must Dagny f--- before the market equilibrium is reached?"