oh, right an iphone4 lol.

What did apple say then?
My sister in law got one and the first thing she said to my wife was'The signal is ok, honestly, call quality has been fine for me'. We hadn't even heard there was any complaints going round until aftger that.
THEN when she has called my sister since, all I can hear in the background is 'what, what, what did you say, I can't hear you properly, say that again'