In the 21st century, the use of technology plays the main role in language learning. As a teacher, it is unavoidable to combine teaching methods (i.e. class discussion) and technological devices (i.e. mobile phone) to enhance student learning. However, the students ’different styles should be considered as a factor for having more effective teaching and learning. Therefore, this study aims to investigate learning styles of EFL students by using Kolb Learning Style Inventory (2005). Then the quantitative data was used as a source to suggest using M-learning for language teaching and learning through mobile phones. It is expected that this study would shed light on developing language teaching and learning in the era of education 4.0.