Did you ever get this sorted? Did you have to return the phone? I just bought the same phone as a twin pack, and neither phones appear to work. I realised when setting up the answer machine as I was unable to record a message. I tried the leaving the memo, which again was just silence, and then tried phoning my son on the mobile. I could hear him, but he couldn't hear me. Exactly the same from both phones, which make me wonder if it is a setting I am missing rather than both handsets being faulty. But unless they strangely start working they are going back. But I saw your post and it sounded the same, hence the original quaestions.