Fetion (Chinese:飞信, pinyin: fēi xìn, lit. flying letter) is an instant messaging (IM) client developed by China Mobile, a Chinese telecommunications company. It allows users to send and receive SMS free of charge between PCs and mobile phones (in certain conditions). China Mobile intends to develop Fetion into a comprehensive communications service which will focus on wireless communications and offer the Internet applications as a complement. D-media Communication Tech (a subsidiary company of Ultrapower Software Co., Ltd) undertakes construction, operation and maintain of Fetion.