Abstract:The use of chats in Mobile Devices (MD) for learning environments is being increased in the last decade. However, they present many accessibility barriers that prevent people from using them. As a result, some people do not have the same opportunities to learn. This research aims to solve the accessibility barriers of chats in learning environments for its use in MDs. Thus, this paper presents the proposal of an model-based design and the strategy development process to create an accessible chat.