With the announcement that JK Shin was to retain his position as Head of the Mobile Communications division, Shin would need to turn his back on what had worked on the Galaxy S3, what had mostly worked on the Galaxy S4, and what had clearly not worked with the Galaxy S5. He indicated that this was going to be the case; he would continue the reduction of the product line and cut up to thirty percent of the portfolio during 2015, this rationalization would bring operating profits back up above ten percent through efficiency savings, and the reduced bill of materials due to shared parts would increase margins.