How to Fix iPhone 6 Plus iOS 8.4 Problems
For iPhone 6 Plus users with iOS 8.4 problems the best solution is to try to fix these issues on your own, unless you are close to an Apple Store. Even if you can schedule an appointment, many of the iOS 8.4 problems are easy to fix.
Here is our guide to fix iPhone 6 Plus iOS 8.4 problems including bad battery life, installation issues, iCloud Music Library errors, WiFi problems and many others.
If all else fails you may need to completely re-install iOS 8.4 on your iPhone 6 Plus with a fresh install. If you have an iCloud backup or iTunes backup you won't lose any data, but you can try other fixes before taking this drastic step.