I've been looking into this for about a year off and on. More recently it seems to be iPads/iPhones that are the worst. Even the latest iOS 5.x. It does seem to be people who travel a lot and/or jump on/off wireless a lot.
Deleting the device partnership does at least for a short time, resolve it in most cases.
I have a little script I run against the logs to show top user syncs. Basically, they do sync constantly all day and night up to 80,000+ hits per day on the ActiveSync frontend server (Exchange 2003), which is about every second or two. I know of a couple of people who got new phones because there battery was dying like crazy. It was just the sync problem killing them.
Anyone else have any info regarding WHEN this starts happening for a device?
It also happens with Android and Windows phones. It may be worse on iDevices for us because a lot of the people traveling have iPhones and/or iPads.
Has anyone found a fix to this issue? My users are experiencing this same issue on 4, 4s, and 5. I just recently realized it would start after they were leaving their normal coverage area and here I find this forum. Turning off push and using fetch every 15min will stop the battery drain but I would like them to be able to use push.