The development of the current information and communication technology (ICT) system has effectively modernized several Malaysian sectors, including the social, political, and economic spheres. The Industrial Revolution (IR 4.0) and the Internet of Things (IoT) are two new concepts and paradigms that have been spurred by the growth of ICT and will undoubtedly help advance human civilization and the nation. The same is true for schooling. The integration of ICT technology into the teaching and learning process is necessary because of issues that arise during the process, such as student attitude and time constraints. Lecturers utilize the extremely limited time allotted for teaching and learning to complete the syllabus. DataComm.Net Apps is an Android smartphone app designed to let students in Mukah Polytechnic's Department of Electrical Engineering access course materials for Data Communication & Networking. The purpose of this study was to produce instructional materials for Thunkable Android applications that could be utilized in Data Communication & Networking courses at the Electrical Engineering Department of Mukah Polytechnic. This application was designed and developed online utilizing Thunkable software, which has a few features, including course information notes, practical works, exercise, video, and a Google Link. According to the results of its use, this application can improve the teaching and learning process, save time for lecturers, decrease the need for printed notes, and encourage students to master the Data Communication & Networking course.