SO.. I noticed on the ride home from the Apple store that I had a thin yellow line on the bottom of the screen when I was playing with the new device (No I wasn't driving) I thought it went away after a lot of use but this morning it seemed brighter than ever. It only seems to show itself on the settings app and in in email. It's not a big deal but it is brand new so I am hoping to get it swapped for a new. I asked the employee who I spoke with and she assured me they had a replacement in stock if it warranted such. I notice that the line isn't visible all the time. Will they believe me if it goes phantom when I am there? I also notice the phone isn't staying on wifi when it is asleep. Would this issue alone warrant a replacement. Thanks.