text: Ann: Hey
  Ann: Seems I havent received your messages
  Ann: sth went wrong with my phone
  Agnes: I sent a whatsapp message
  Ann: I know, but couldn't open it
  Alex: I sent you a text yesterday 
  Ann: Yeah, I got it
  Ann: So it seems there's sth wrong with the app
  Alex: Restart the phone and check again
  Ann: I did
  Ann: and it's working now but I can't see previous messages
  Alex: alright
  Ann: Just wanted to let you know :)
target: Ann can't see all the messages as the app has crashed.