RuthAH

I have a C1 and I have changed my phone recently from a Windows phone (Nokia) to a Sony Xperia. The phone works perfectly including transferring messages. However, the contacts list stubbornly refuses to be added and the message appears that one or more contacts is preventing the action. I have tried deleting any suspect messages but it doesn't work. (The windows phone transferred the contacts automatically) I have even tried transferring messages via Bluetooth and that doesn't work. Short of adding each individual message manually which would be tedious, I am completely stumped. Help?