Grey ticks of whatsapp My friend does conversations with me on whatsapp and respond to each and every message I sent to him yet grey double ticks on my messages do not turn blue. Even in the information pane of message I cannot see the "Read time" of the message. However whenever I asked him to tell me what had I sent to him he replied correctly as if he were reading. How is he able to do that? Is there any trick or my mobile's fault? I have attached an screenshot also
he maybe simply reading them from his notification panel and replying. 
This is in case if u guys are having short conversations ... else it might be either  1) he is using lucky patcher.
        2) he has simply unticked the blue ticks in privacy settings.