Before revision:  Yet, energy-efficient mobile web browsing remains an outstanding challenge . Prior work in the field mainly focuses on the initial page loading stage  but fails to exploit the opportunities for energy-efficiency optimization while the user is interacting with a loaded page.
After revision:  Yet, web access on mobile devices remains an energy-hungry activity . Prior work in the field mainly focuses on the initial page loading stage but fails to exploit the opportunities for energy-efficiency optimization while the user is interacting with a loaded page.