Ok, this time I have a serious issue that requires troubleshooting. Occasionally my screen will begin to flicker blue, during this, there is faint horizontal lines present, and I am able to see what is underneath the blue but not clearly. The speed of flickering, if or not the flickering occurs with the blue, how often it occurs, and the frequency of horizontal lines all appear to be random. I have done some research by googling the issue, and it seems this is a known problem, even in the new HD models. Some say its related to temperature, some are saying it is a glitch occuring with the automatic brightness feature. I have turned off automatic brightness adjust and set my own value (about 20%), time will tell if doing that will solve the problem... Of the 2 days I have owned the phone, yesterday I spent the day indoors and encountered the issue maybe 3 times for very short durations, while today I was outside frequently in approximately 0 celcius and the problem was happening much more often. When I got home, the issue has not occured. It might just be in my head, but this seems to support the theory that the issue is related to temperature. Anyhow, I would like to hear what you guys have to say about this... Have any of you encountered it? What is your opinions of the likeliness of the cause here? This phone was purchased on Ebay and the previous owner lived in the USA, I live in Canada. He shipped the phone with only the charger to go with it, no paperwork, so I am not sure if there any warranty options available to me, however he claimed that he owned the phone for approximately a month before selling it.