Today, I was sitting on my couch when my right thigh stated to burn. I immediately reached in my pocket and grabbed my iPhone when I found out it had been the phone over heating. I had no apps running in the back ground as I get paranoid and delete all running apps and clear my history, cache, and cookies every time I get done using the phone. I was just wondering if anyone else has had this experience? Also, my back plate has started clicking when pressed, I have light leakage from the head phone jack and micro-sim slot, and I have the over heating problem. With all these problem should I return my iPhone 4 for a replacement?