I had my iPhone 4s replaced at an apple store this morning for various reasons. I've have the replacement for a few hours now and have had no issues with it, until I changed the walpaper from the stock to a darker one and noticed what I thought might have been a hair but turned out to be a crack under the glass. Now it's too late to go back to the Apple store because they are already closed. My question is, if I bring it back tomorrow, do you think they will replace it again. I have a few issues with this. 1, whenever the screen is dark now it sticks out like a sore thumb and I can't really deal with it and 2, will the screen crack more than it already is now. I have attached some pictures I took with iPad, so a little grainy, but you can still see. I don't even know how this is possible under the glass. Thanks for any insight or thoughts about how to go forward with this.