So I just received my new android phone yesterday, and I pull it out of the box charge it up and turn it on and I notice a small blue mark on the LCD in the bottom left when on a dark screen such as black, I was wondering if it is a dead pixel or there is something that can be done for it to disappear I have already rang Vodafone UK and they said they can do a courier swap for the faulty item because it was purchased online, so I was wondering what it actually was