jeavane The truth is that I do not recommend making any changes for this problem, since I have seen that it has happened to several people. For this new phone it was obvious that if they wanted to maintain a competitive price, they had to cut costs in some area, and it is quite logical that the manufacturing process is not the strong point of this phone, if you request a replacement or repair, you run the risk of this problem being more serious or not being solved, so since it affects the aesthetics so little, I would simply ignore it. In my case it was the same, I kept the same phone without any replacement and in the end I forgot that the speck of dust was there.