I recently moved from an iPhone 4 on Verizon to 4S on AT&T. Everything's has been smooth except that I found that I can not delete multiple Exchange messages by marking and deleting in the native mail client. I press Edit and the little circles appear to the left of each message ostensibly to be able to mark them. But whereas there used to be a little trash can and other icons at the bottom during this time - there is not just a blank gray bar. If I back up a menu and go into GMail with the native client I can mark AND delete the messages as I always have. Running IOS 6.0.1. ???