Ok guys I'm one of the unlucky guys to get an iPhone with a yellow spot on the bottom left corner of the screen. I know they been saying this is a non issue and will go away but I got my iPhone on the 24th and it's now the 26th. I know it's only 2 days lol but it's still there and it's not fading away. How long should I wait before taking it back to apple to get a replacement?