I have "push" enabled for my Exchange email account. I don't receive new email alerts for the account anymore. I have to open Mail app manually and then wait a second or two for the phone to connect to the server. I've been reading this is an iOS 6 issue -- is that right? When I got the phone a few days ago, I was getting new mail alerts, including when the phone was locked. When I changed the fetch schedule to check my Gmail account more frequently, push for my Exchange account started failing. Any thoughts on what may be going on here? It's an iPhone 5 running iOS 6. I haven't tried deleting the Exchange account and restoring it, although I have disabled and re-enabled it.