In day to day life we use this most famus app but this app have so many issue, so this app is good concept to massanging pic , audio , videos. This app is very useful but it is not good with that new update this update is not fore very good user friendly , this app old one is the best.! WhatsApp’s mean issue is group pic will be automaticly downloded.! And the new update is destroy your privacy and Any one can join your grop without admin permission is very bad thing about this app .and over all this app is useful : )