On Dec. 3, 1992, the first text message was sent, saying “Merry Christmas.” Over the past three decades, the role of both the mobile device and the text message itself have changed exponentially. Now, consumers are on their mobile phones for an average of . The mobile world has come a long way since that first text message. If retailers learned any lessons from these past few years, it’s that they must continue to adapt how they interact with and serve today’s consumers through mobile.