I was originally on a version of iOS (likely 5.1.?) and ran into issues with getting email and calendar to sync. I presumed there might be a problem with holding off the OS update, so I upgrade to iOS 6.1.1. Now I have the same problem with the additional benefit of having my battery drained very quickly.
Two questions:
a) Are others encountering this issue?
b) Is Office 365 doing something to block iPhone 4S users or a subset due to iPhone issues?
Steve