“…There are ten features in the two-valued parameter category (video call, voice messages, video messages, basic colors, high resolution, camera, video player, music player, radio and voice recorder) and eight features in the one-valued parameter category (smart mobile system, calls, messages, GPS, screen, media, voice call, and text messages). From these parameters, the possible configurations that need to be tested are 2 10 × 1 8 = 1024.…”