Pedagogically sound design for mobile learning application development is a key factor for providing a pleasant and rich learning experience in a mobile environment. In the context of higher education, this need is very critical as institutions and students begin to recognize the importance of bridging the gap between formal classroom and out-of-classroom informal learning to achieve pedagogical goals. However, there are very few existing research studies on how mobile learning design could be informed specifically to support pedagogical requirements for educational mobile learning application. This paper therefore presents a review on the MOBIlearn task model framework and its contributing factors in an attempt to capture appropriate requirements by generalizing the current state of understanding and discover common grounds and similarities from previous research publications. A number of key mobile learning articles, mostly from conferences and journals containing explanation on any of the factors, have been consulted to get a deeper understanding and insights. At the end of this paper, we discuss our findings as a set of pedagogical requirements identified from the literature by categorizing them based on thetask model factors in order to clearly answer our research questions and design a techno-pedagogical tool based on what we have learned in the review.