Hi, I've purchased a couple of months ago an Iphone 8GB and it has been working very well since then. Only now I can see on the right handside of the screen a line of pixels which have a different colour, depending on how long I use the Iphone the more visible it is. It's not really a major thing as sometimes its hard to notice. But I would like to get it fixed as perhaps it becomes worse in the future. The device has still warranty. But I have unlocked it and not activated. Am using my own O2 simcard for it and not the one provided with the handset and iphone monthly package. Will this device still be under warranty? Currently software 2.0.2 is installed. Do I need to bring all settings back and lock the phone again? What is the best way to do it. And if I have the handset in DFU mode, it will be probably difficult to show the screen problem? How to do deal with this? Have bought the iphone in the UK with Carphoneware house. Your help is much appreciated!