3/31 update: already tried restarting phone. app is most updated. you cannot do a full uninstall and reinstall because it's part of the system. I can't clear app cache because it doesn't even show up in my app management even though it says installed through Google playstore. -- 3/30 disappeared from my screen. says it's installed but doesn't show up anywhere. not in hidden apps. only way I can access is thru the playstore.