when i bought my pre i remember the lady who sold it to me really checking it out. sliding the slider, looking at all angles for light leakage and dead pixels, making sure all the buttons felt right, she even made sure the battery was an upgraded one.. i have had no problems from my phone and i owe it to the very professional rep that sold it to me at the sprint corporate store on battleground ave in greensboro north carolina, thank you to her if she reads this