My MObile (SE W850i) seems to have developed a problem over the last day or so. I have to pretty much shout for the person on the other end to hear me. It works fine when using the handsfree kit though, so it seems to be the phones built in mic. I'm on an 18 MOnth contract with 3, which I think I'm about 9 MOnths into. I've no phone insurance. Am I likely/entitled to recieve a repair? I'm hoping it has a standard 12 MOnth warranty? If not, any suggestions?