i bought this phone yesterday @ t-mobile & last night in my room in pitch blackness while i was in the wallpaper settings i could see some black spots & a small line on left side of phone , i've heard that this is "Normal" for AMOLED screens & seen replies from people who have exchanged their phones & have gotten worse or better with one or few spots but i've also seen a few claiming they have no spots whatsoever, i'm torn at the moment on whether or not to replace it as i already customized it to my liking but seeing the black spots there at night are annoying. what do you guys recommend?