The year's greatest celebration of mobile technology, Mobile World Congress, kicks off next week in beautiful Barcelona, Spain. With the exception of Apple, virtually every major phone manufacturer around the world takes MWC very seriously — it's a consumer electronics show whose buzz level is rivaled only by CES — and we're expecting a slew of announcements starting with press conferences from Huawei, Sony, and HTC this coming Sunday, February 26th. Though we'll undoubtedly get a surprise or two, there have been enough leaks and teasers in recent weeks to give us a pretty solid idea of what to expect, so let's take a look.