I migrated our MobileMe accounts to iCloud the day it was released, after updating my iPhone to iOS 5. I was using two accounts. One account is my primary and I synched mail, calendars, contacts, etc using it. I had another account that I only used for e-mail.
Overall, my transition to iOS 5 and migration of the accounts went without any major issues.
Well, that was the case until I tried to use Pages, Numbers, and Keynote on the iPhone with the new iCloud sync capability. For each app I turned on the “Use iCloud” option but every time I opened one of the apps the setting reverted back to off and in the iCloud Website it just showed the intro pages for the apps.
The Short Version: It’s worth exactly what you pay for it. If you really need a reliable, high-capacity battery case that’s worth the inconvenience of carrying a brick then I don’t recommend this case. Mine has sat unused on a shelf for months. I may just charge it up once a month for emergency use at home. It does a good job of maintaining a charge when unused for a long period of time but unfortunately I started having a problem with the case randomly stop charging and then restart, even when it was sitting on a flat surface. I suspect the dock connector is failing, which is similar to problems others have mentioned in product reviews for this device.
My iPhone 4 battery still works well but I have noticed that it doesn’t last quite as long as it used to, especially if I’m using it for power-hungry tasks such as playing a game or browsing the Web. I think I’ve treated the battery well by making it a habit to not leave it on the charger all night and instead only plug it in until it reaches 100%.
This week I started browsing iPhone battery cases. I perused the reviews for several, but I couldn’t make up my mind. The battery performance drop wasn’t enough to justify spending $60-$80.