New technologies develop rapidly and suffer constant innovation while increasing their social use. All technologies slowly reach schools and educational organizations in general. Many Argentine schools have found themselves halfway in the goal of reaching an appropriate digital culture for the new students that populate them. They are in a gray area, in the middle between the analog culture and its walls and the digital culture and its networks. On the other hand, mobile technologies have modified the educational landscape, contributing to education connectivity, ubiquity and permanence, characteristics of mobile devices in distance education systems. The use of these technologies allows a person to access content, within the context in which it can be found, to achieve meaningful learning. The intersection of online education and mobile devices is known as “mobile learning” (in English, m-Learning or mobile learning). M-Learning refers to learning environments based on mobile technology, aimed at improving and promoting teaching and learning processes. The teacher as the main actor, to face the new changes, challenges and challenges of a disruptive education, influenced by Industry 4.0, supported by educational managers who understand this revolution with the mission of educating the digital citizen, in new skills and competencies to The 21st century. For this, teacher training must be part of the educational process itself, using the goods that technologies in use promote, but without ignoring their limitations and possibilities, but generating a useful and critical use. With this idea, we proposed in 2020 to start a teacher training process that promotes mobile learning among educators, so that they can progressively generate student literacy in mLearning and favor the appropriate use of mobile technology as means to learn, generate new knowledge and develop critical thinking. The training objectives were focused on deepening knowledge about the basic foundations of m-Learning and expanding practices and knowledge about collaborative learning in real time through m-Learning. Keywords: m-Learning, learning, training, critical use