When use radio button?
Radio buttons are used when there is a list of two or more options that are mutually exclusive and the user must select exactly one choice. In other words, clicking a non-selected radio button will deselect whatever other button was previously selected in the list.
What is the radio button on Amazon?
The AlexaRadioButton component is a touchable component configured as a radio button. On a device with the VoiceView screen reader enabled, the user can tap the component to select it, then double-tap on the screen to select or clear the button. For details about accessibility and APL, see APL Accessibility Guide.