Exchange

Switching to an iPhone 4S from BlackBerry or Android and curious how to transfer your data over? We've already told you how to transfer data from an existing iPhone to the 4S, but crossing platforms can seem like a bigger headache. It isn't. There's lots of services available to help you transfer data from one device to another. Keep reading for some simple suggestions that can make the process of going from BlackBerry or Android to iPhone and iOS 5 just a little easier for you.

iOS 4 on iPhone and iPad and Exchange 2003 just don't seem to be playing nicely together, especially when it comes to Calendar events -- they mysteriously disappear from ActiveSync, invitation replies refuse to send, and, well, don't get me started.

Both problems are serious for enterprise users. In the first you create or accept and Exchange event invitation, it gets added to your Calendar, and then -- poof! -- it's gone. But only from ActiveSync. If you look in Outlook or OWA (web interface) it's still there. If you're relying on ActiveSync on your iPhone or iPad, you could miss your meeting, call, conference sessions, etc.

When you sync contacts from more than one source (i.e. Exchange and MobileMe, on-device and Google Sync, etc.), and there are duplicates, rather than showing the same contact twice iOS 4 will instead create a single, linked contact. This works on any iOS 4 device, including iPhone 4, iPhone 3GS, recent iPod touch, etc.

When you look at a linked contact, the header will show Unified Info at the top so you know it's linked. At the very bottom of the contact it will show you the source of the links (i.e MobileMe, Google). Tapping on the source lets you see the original, non-unfied info from just that source.

If you don't like the idea of your contacts being linked, you can tap edit and hit Unlink. If iOS 4 missed linking a contact that ought be linked, tap edit, scroll down to the bottom, tap Link Contact and choose the contact you want linked.