Friends today iam explaining my experience about this what’s app.worlds most people are using what’s app.and what’s app gives us some safety features, this feature is not real, because our personal message can red hackers still now, and previous month what’s app gave new msg deleating opption but it is not working properly.yesterday I sent one wrong msg to wrong person, before 5 minutes I deleted.but it is not deleted recivers mobile.so I am not recommending you to use this safety less app.see proof below