"Functionality improvements" refers to updates or changes made to improve how something works or operates, making it more efficient, effective, or user-friendly. Full definition
The app has already witnessed a lot of functionality improvements and the addition of new features this year alone. (nashvillechatterclass.com)
The New Nintendo 3DS XL retains the curved, dual - display clamshell design of the original 3DS XL, while adding some significant functionality improvements. (tomsguide.com)
The Update features a number of major changes from online multiplayer to overall usability and in - game functionality improvements, including; (wiredproductions.com)