Originally Posted by gmalone
For many, upgrading to iOS 6 has become a nightmare. A co-worker lost all of her contacts by upgrading. A call to Apple and review of Google discussions shows that many others have also lost their contacts. For my friend, she was like millions that aren't technical and didn't have a backup -- hadn't activated iCloud, hadn't backed up to iTunes. Her contacts are GONE. Apple apologized and said this was an "emerging issue" for many upgrading users. The CRIME is that Apple could release an update that even had the possibility of deleting a user's local data. I've said it before and will say it again, Apple makes great hardware, but are HORRIBLE at software. We still live in the stone age of technology despite the hype.
If your friend didn't make a backup, oh well.
It's like the golden rule of IT - never assume anything. Upgrades aren't foolproof, a good, recent backup is a must. And/or, use a Google account and sync all your contacts with that.
My experience with iOS 6, is that's ho hum. Maps is definitely a work in progress, good potential, but beta. Restoring from iCloud worked spot on, and I like the addition of being able to share my photo stream.