This study investigates the impact of mobile technology-mediated language learning (MTMLL) on the learners’ Balinese language learning achievement and autonomy. A quantitative approach research with quasi-experimental and survey designs was conducted. The data were collected through the tests and MTMLL questionnaire administration to fifty-eight primary school students in Bali, Indonesia. The data were analyzed statistically using SPSS 23 version. The results indicate that MTMLL has a positive impact on learners' achievement and autonomy. Participants reported that learners using MTMLL showed higher levels of achievement compared to those who did not use this technology. Additionally, MTMLL provided them with more control over their learning and allowed them to study at their own pace and convenience. The findings of this study contribute to the literature on MTMLL and local language learning by highlighting the importance of technology in promoting learners’ achievement and autonomy. The study suggests that MTMLL can be an effective tool for language learners to enhance their learning experience and achieve better outcomes.