Ever since I upgraded to the iPhone 5, the default mail app is acting up. It frequently keeps hanging when checking for mail and it doesn't update the inbox until I close the app and re-open it again. This is also messing up my drafts and not saving them. This happens all the time and it is so annoying. Is this happening to anyone else and does anyone know how to fix this?? I don't have any Exchange inboxes setup, so I don't think it has to do with whatever that issue was with Exchange accounts. Also, it happens on Wifi, LTE, and 3G. Any help would be MUCH appreciated!