Speaking skill acquisition is a necessity for communication. However, speaking English as a foreign language is not as easy as speaking English as a first language since practice opportunities are limited. This study tried to find out a technique of reinforcement that can help students; who study English as a foreign language; develop their speaking skills. This study investigated the effect of using simulation strategy in developing EFL speaking skills, with the assistance of using a telegram channel "Oxford Bookworms Collection" for PDF books with an audio version, to stimulate pronunciation, intonation and enrich vocabulary. The researchers used a quantitative approach with an experimental design to conduct this study by involving 50 students divided into two groups. 25 students as a control group and 25 students as an experimental group; both groups were from level 3 who were learning Listening and Speaking-3 course, major English, at College of Science and Arts (Muhayil), King Khalid University. Pretest and posttest were used to collect data, results of the tests were analyzed using SPSS, Pearson correlation coefficient. The results revealed that using the simulation strategy helped the students of the experimental group to develop speaking skills and affected speaking micro-skills in terms of body language, fluency, pronunciation, intonation, grammar, and vocabulary usage positively. Moreover, students became motivated to speak spontaneously.