Cheetah Mobile Inc. operates as a mobile Internet company worldwide. The company's utility products include Clean Master, a junk file cleaning, memory boosting, and privacy protection tool for mobile devices; Security Master, an anti-virus and security application for mobile devices; Battery Doctor, a power optimization tool for mobile devices; Cheetah Browser, a Web browser for PCs and mobile devices; CM Browser, a mobile browser to protect users from malicious threats; and CM Launcher, which provides personalized experience in using smart phones. Its utility products also comprise Cheetah Keyboard, an artificial intelligence (AI)-enabled application; Photo Grid, a photo collage application for mobile devices; CM Locker, a lock screen with notifications and security; Duba Anti-virus, an Internet security application for PC and mobile devices; and SafeWallet, a mobile digital wallet. In addition, the company offers Live.me, a live video streaming application; and Cheez, an interactive