Yep, I agree - a rubbish phone.
When you say 3 second delay, do you mean that when you answer the phone and speak the other person can't hear you for the first couple of seconds? That's what I get anyway.
I could also add to the list of problems: the strip of rubber at the bottom is very irritating to keep opening and closing, and the charger when plugged in keeps cutting on and off due to a dodgy socket.