I am upgrading a family member through Verizon. But, some of the Thunderbolt folks have had to return their devices repeatedly because of dead pixels and/or dust under the screen. One person in particular found that Verizon would only allow 1 return, while Best Buy was allowing multiple returns until the customer was happy.
Maybe it was a one-time problem with Verizon. Just food for thought, though.
Just curious. In posts about different smart phones people have complained about dust under the screen. I always keep my phone in my pocket with a case that covers the sides and back and I have never had dust under the screen. With all the lint and stuff in a pocket you'd think there would be dust.