Technology has a profound influence on schooling in the 21st century and educators are being challenged to incorporate technological innovation to assist students in their learning. Accordingly, the face of learning is changing in general and new technologies are offering students and teachers with tools and occasions unconceivable before. In this respect, this study aimed to investigate the impact of Telegram (as a mobile technology) on collocation learning and retention of Iranian EFL learners. Participants of this study included 120 EFL learns (in two experimental (N= 60) and control (N=60) groups) who received different treatments over the study. Analyzing the results showed that there was a significant difference between the performances of experimental and control groups, of course, in favor of experimental group who confirming the effect of Telegram on improving collocational knowledge. This study implies that using social media network- Telegram has various pedagogical benefits and it can be very promising in EFL instruction.
