LG Electronics Mobile Communications division developed the Variable part Auto Configuration and Management System (VACMS) to improve its current smartphone application development process. However, the effects of the new process using the VACMS have not been assessed yet. In this study, we compare the current process and the new process through a case study. The assessment results show that using the new process the development effort is reduced to 32.5% of that of the current process and the reuse rate becomes 2.34 times higher in Lines of Code.