MWC Barcelona is expected to be a spectacular year with the growth of the smartphone development community, attracting over 60,000 attendees from around the world. Twilio is participating in various events including "Spark the Fires of Innovation" with Alcatel-Lucent and hosting its own API Hack Day. The company's team will be present at MWC to meet new people and discuss developer engagement strategies. Additionally, Twilio invites attendees to join their get-together for a fun-filled week in Barcelona, offering telephonic company for those looking for it.