The present paper investigates an Impact of Mobile Learning Services of Engineering Students. The main objectives of the study is to carry out the Frequency of Access , Purpose , Use of Tools, y an access and use of Mobile learning, use of File Types, Library based Mobile learning Services, Access and Types of Online resources and Ranking wise Core Components of Mobile learning. The study analysis has selected an Engineering students in Chennai region such as namely Raja Lakshmi Engineering College, Sri Sai Ram Engineering College, St Joseph's College of Engineering, and Panimalar Engineering College, Chennai. Well-structured questionnaires are distributed to each institutions 100 questionnaires and totally 400 questionnaires and 343 were responded in the survey and overall respondents is 85.75 per cent. The majority of the respondents are using the mobile learning for academic activities in engineering fields