On my old phone when I got a whatsapp message it would always show up right away. On my HTC one if I have been using the phone recently the messages come in right away but if my phone has been off for about 10 minutes I notice that the messages are quite delayed and sometimes I don't get them until 10-20 minutes after the whatsapp timestamp. I also can't seem to get push email to work at all. Is anyone else having problems with this?