Next week marks the coming of an annual ritual: Mobile World Congress, the world’s largest trade show devoted to the wireless industry. This is the place where the Samsungs, HTCs, ATTs, and Vodafones of the world rub shoulders in scenic Barcelona. Even Windows 8, only tangentially related to the mobile world, was fully unveiled here. We’ll be covering everything that happens from this year’s MWC as it happens in real time, starting on Sunday and continuing throughout the week.