In the past decades, teaching and learning has undergone rapid transformation partly because of advances in technology and access to such technology (Sung, Chang, and Liu, 2016). Mobile technologies (i.e. tablets, smartphones, and access to Internet) have become widespread, and is visible, even in the developing world (Aguayo, Cochrane, and Narayan , 2017). Mobile technologies allow for online learners to access learning resources on the go (McQuiggan, McQuiggan, Sabourin, and Kosturko, 2015). Instructional message design principles advance empirical tools aimed at producing lessons that allow for effective learning (Bishop, 2014).

The purpose of this study was to develop a set of considerations for designing messages for mobile learning primarily through literature review and expert reviewers' feedback. The research methodology employed in the study is based on design and development research methodology (Richey and Klein, 2007). The study utilized Clark and Mayer's (2016) multimedia principles, Center for Universal Design's (1997) universal design for instruction (UDI) and mobile interface design best practices.

Five expert reviewers with varied expertise in human computer interaction, special education, mobile learning, and instructional design were sought to review the considerations and provide feedback on its effectiveness for instructional message design. Overall the expert reviewers agreed that the considerations were effective and will be helpful to instructional designers, instructors of instructional design and content developers. They provided several helpful recommendations which were used to revise the considerations for designing content for mobile phones.