Microsoft has said this before that Windows 10 will run across an incredibly broad set of devices devices. Some of them will have have 4 inch screens – some will have 80 inch screens. Windows 10 is a one product family, with a tailored experience for each device, either smartphone, tablet or desktop PC. But we still don't know how it will look like, so Ghani Pradita made this excellent Windows 10 for Phone concept. I hope the real OS will look as good as this concept.