Detailed information about the project could be provided during the interview.
Major US based mobile OEM wanted to upgrade its basic phone line of products (feature phones) with a new Firefox OS based devices using modern hardware supporting VoLTE.
The main challenge of the project was that Firefox OS was initially designer for a touch screen devices and did not support touch-less interactions or any other devices without touch screens.
The main goal of the project was to adapt touch-based Firefox OS to a touch-less device (flip phone, slider, ect).