Hello, I've been using my iPhone with the free case I got and have never had any reception issues. However I took off the case and it feels much better in my hand. But now I have mild/moderate reception issues. I drop two bars whether it be on 3G or wi-fi when I hold it in my hand. Within my urban area I'm occasionally finding it takes longer to get a connection, or sometimes can't get a connection at all depending where my location is. Would Apple see this as enough of a reason to issue me a replacement iPhone 4 under my warranty?