Among the new features introduced in Cupcake were:

1. An on-screen soft keyboard that provided a user dictionary for custom words and worked in both portrait and landscape orientations;
2. New live folders and widgets like an analog clock, calendar, and music player, that could fill the Home screen;
3. Bluetooth support for A2DP and AVCRP profiles as well as auto-pairing; and
4. A browser that allowed copy and paste, user-selectable text-encoding, and on-page searching.

This update to the Android featured system-wide refinements and enhancements, including:

1. Refinements on all core UI elements, animated window transitions, and accelerometer-based application rotations.
2. Enhancements for The user interface of Contacts, SMS & MMS, Gmail, Calendar, the camera and gallery.
3. An enhanced application management system.
4. Faster camera start-up and image capture.
5. Faster acquisition of GPS locations.
6. Smoother page scrolling in the Browser.
7. Faster list scrolling in GMail conversations.