Dont use we chat . When I try to install it directly from Playstore, it show this application unable to install in your device . So, I need to download the APK file of Wechat manually& then I install the application . I don’t know why I faced this problem only for Wechat application .Size of the Wechat application is too big 90 MB . After using it my mobile device slow down too much . After using it for few times always I need to restart my mobile to refresh my mobile .Loading time of this application is too much . Many it is unable to load . When I open this app world logo of wechat still for few minutes . If I have few unread message in Wechat, then it take too much time to loaded fully, black screen came& stoped working for few minutes .Features& function of this application are not good . Video calling& voice calling not working clearly& very slow .Design of the application is not good. I don’t feel comfortable when I send file to any one or received file . useless app