The document announces the 4th Mobile Commerce Summit Asia 2011 conference and calls for speakers, sponsors, and exhibitors. It provides information on submission deadlines, topics that will be discussed related to mobile payments, banking, and commerce. Interested parties are asked to submit an abstract, contact information, and details on potential speaking, moderating, or panel participation. Sponsorship opportunities are also outlined. The goal is to gather industry leaders and discuss growth in Asian mobile commerce.