Research on mobile learning indicates that students perceive mobile devices mainly as communication and entertainment tools. Therefore, a key factor in successful mobile learning implementation is the initial measurement of students' acceptance of those devices into their learning. Countless language applications available suggest that mobile devices can be ideal tools for language learning. Surprisingly, there are few studies reporting students' acceptance of mobile assisted language learning (MALL), let alone MALL acceptance in developing countries. By adapting and extending the unified theory of acceptance and use of technology model, the study assesses the dimensions affecting behavioral intentions and actual use of MALL. Data were collected and analyzed using structural equation modeling. Results show that performance expectancy, social influence, and facilitating conditions influence students' attitudes towards using MALL. Accordingly, attitude is the factor that affects behavioral intention the most. The model also shows that behavioral intention has an effect on MALL use. The study concludes that students enrolled in higher education in developing countries such as Colombia have a positive attitude towards MALL. However, an improvement of facilitating conditions, along with a more influential role of the educational community is needed for a successful MALL integration in education.