I often used my father cellphone secretly. What is more my mother used. So cellphone fee was very high. He was very surprised. So, my mother and me were startled and we turned away him. He called me and ask me “Do you know the reason why why cellphone fee is high?” I shaked my head and I called my mom. She said” You must close other service. For example, color ring and bell sound etc. and you must not link internet on cellphone.” The moment, I was laughing in my sleeve. Other side I felt he was very pitiful.