What does 'last activity' option consist of? Calls, chatting, sending files? But what about undelivered messages? Help me, please!
More detail: I talked to one of my contacts last time on May 12, 2013. So our last activity should be 1 month ago. But it shows 1 day ago. Probably it means my contact sent me a message 1 day ago but it is undelivered now for me because we are not online both? true? (p.s. this contact was online (last seen) June 14)
Thanks! I've already understood it. Last activity is only about typing or calling or sending files to a particular contact..