As a consequence of tremendous technical breakthroughs over the last several decades, there has been an unparalleled growth of portable smart devices, as well as a surge in mobile applications, specifically for language acquisition. Notwithstanding the amount of research on Mobile Assisted Language Learning (MALL), there is a scarcity of studies on non-English major students' usage of MALL in Vietnamese colleges. Using the Technology Acceptance Model (TAM), this study explored how the non-English major university students use MALL at three universities in Hanoi and their reflections. The information was acquired through a survey of 200 first- and second-year students, which was then followed by in-depth semi-structured interviews with 20 students. The data findings showed the diverse frequency in using a wide range of mobile applications. It could be seen that online dictionaries like Google translate or Tflat were most regularly used while Lacviet dictionary was mostly ignored. Social media such as Tiktok, Facebook were much more frequently used than WhatsApp, Twitter or Skype. Meanwhile, the interviewers also reveal the convenience and flexibility of MALL, although many of them agreed that the fee as well as the security of several applications caused troubles sometimes. It draws to a close with a conclusion and suggestions for the future initiatives.