The most popular phone running Windows Phone 7 is the Samsung Focus, a US-only device. The second most popular handset running Windows Phone 7 is the HTC HD7. We also look at the future of Windows Phone 7, and with seven new devices leaked, including the HTC Mazaa (which 0.2 percent of the Windows Phone 7 community is already using), Acer W4, HTC Ignite and HTC Prime. Take a look at out infographic to see Windows Phone 7's journey so far and what the future holds for the platform. Click on the image to enlarge it.