iPhone 6 iOS 8.4 Problems
It's important to note that some iPhone 6 users are running into iOS 8.4 problems after making the move. Some of these problems are related to Apple Music but we've also some iOS 8.4 specific problems emerge over the last week.
iPhone 6 users are complaining about battery drain, problems with Audiobooks, issues with the device's SIM card, and more. While there are certainly problems, most of these issues are isolated to a few users. We haven't seen any widespread iOS 8.4 iPhone 6 issues.
Now this doesn't mean that you will run into iOS 8.4 problems on your iPhone 6. There's a very good chance that your performance will match the performance that we've been getting out of the device for a good week now.
There is, however, always a chance that something will pop up on your phone immediately after installing and in the weeks after the installation. You always assume some risk installing iOS updates on the iPhone so you'll want to prepare, gather feedback, and learn as much as you can about the iPhone 6 version of the software before making a move.
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