I have a Nokia Lumia 930 Windows Phone which currently has no display at all. I've tried a reset and this has not worked. The phone rings when called but the display is black. How do I fix this or get the phone repaired? I have had it for over a year is it still under warranty as my contract is 24 months? How much will it cost me to have it repaired if it is not under warranty? If I don't have it repaired how can I retrieve the information on the phone for example photos, texts, contacts etc.