Advancement in learning grammar and using it practically is one of the challenges of English as foreign learners (EFL) learners. Its progression may be expedited or slowed down by a variety of causes. Among the crucial factors, the possible effects of self-evaluation, teacher support, and L2 grit were still untouched which is the target of the current research. In so doing, 86 EFL students at the intermediate level were divided into two groups (i.e., experimental group and control group). The students in the control group (CG) are exposed to normal education, whereas learners in experimental group (EG) get extra instruction to practice self-evaluation and L2 Grit. Moreover, the emphasis on the teacher\'s position as a facilitator and supporter was more prominent in the EG. Based on data screening which was completed via one-way ANCOVA, learners in EG were more successful in grammar assessment due to the treatment. Further research avenues and educational implications were elaborated upon.

This study developed a personalized mobile-assisted system with a self-regulated learning (SRL) mechanism to facilitate English-as-a-foreign-language (EFL) students\' learning of grammar. A quasi-experimental design, involving an experimental group (n = 278) and a control group (n = 320), was adopted to examine its effectiveness on students\' grammar learning. The experimental group, who had full access to the functions of the system (i.e., recommendations, feedback and an e-portfolio package), used the system to learn grammar, complete grammar exercise, and engage in for a semester, while the control group only use the system to submit weekly assignments. The results suggest that the experimental group obtained significantly higher scores in English grammar tests than the control group and the system benefited both genders with no significant differences. The findings provide empirical evidence in support of the effectiveness of this system in improving students\' grammar test scores, indicating its value as a supplementary tool to conventional classroom teaching of English grammar via supporting learners\' SRL development in a m-learning context. The pedagogical implications for applying this system in classrooms and beyond were discussed.