Education in the 21st century where information technology can become the basis of information in the world of education, so it requires teachers and students to be critical and creative. Science learning cannot be separated from 21st century skills known as 4C skills (Creativity Thinking, Critical Thinking, Communication, and Collaboration). The problem faced by researchers as science teachers is the lack of 4C skills of 9th grade students, especially on the topic of electricity resulting in low learning outcomes of students. The solution to fix these problems, the teacher applies learning using the Creative Problem Solving (CPS) model with the help of a device or cellphone. Given that almost all students already have this device. This research is a classroom action research (PTK) with two cycles, each cycle consisting of two meetings. Based on the research results it can be concluded that 4C skills, namely Creativity Thinking in the first cycle an average of 85% and the second cycle of 96.25%. Critical Thinking in the first cycle an average of 86.75% and the second cycle of 98%. Communication the first cycle average of 89% and the second cycle of 98.50%. Collaboration average for the first cycle was 84.75% and the second cycle was 97.50%. The learning outcomes of students in the first cycle of learning completeness were 70.97%, while in the second cycle it was 90.32%. There are still three students who have not finished receiving remedials. Learning using the CPS learning model with device assistance gets a positive response from all students.