Have you ever thought about whether being a skilled Android App Developer is sufficient for the success of your projects? Perhaps it's time to consider expanding your skill set. In this talk, I will explain the concept of being "T-shaped" and how it can influence mobile development. What does it mean to be a "T-shaped" skilled specialist? What kind of benefits could it bring to your daily work? What career opportunities could it open for you? During this talk, you will discover the essence of being a T-shaped skilled specialist and how it extends beyond mere coding proficiency.