how to downgrade 8.4 to ios 7 i have iphone 4s and i am facing a difrent kinds of problem.

It's not possible to downgrade. If you were to restore your iPhone at some point, it would automatically reinstall iOS 8.4.

It's up to Kindle to update their app for iOS 8.4 compatibility. Not Apple.

Apple has never supported downgrading an iOS...when a new version is released, the old version files are removed from the server. There is no way to go back.

Exactly what problems are you having? If you explain, we may be able to help you resolve them.

Hello, I have an Iphone 4s and I have a LOT of problems after upgraded to IOS 8. Everything was ok before this upgrade and I was sure to check if this upgrade is compatible with 4s:

- camera is working time to time.most of the time is showing a black screen, everything freeze and after 10-15 seconds I got the main screen

-when I talk sometimes the conversation stops and did not appear in Last calls list. It is like I never call that number

-Itunes everytime I open freeze. When I choose and recent added album the application restart.

I restore twice the phone and is the same.

I am also facing problem in ios 8.4

I Have iphone 5s and its start hang problem. when i type test its coming after some time. reaction is slow. also camera coming blank screen. its working fine before. I want to downgrade again. I dont like ios 8.4. Its stoped my work. I am not able to work. its wasting my time. i am stuck dont know what to do. 😟😟😟

One new issue - my friends told me that I call them, but I didn't , and I don't have their call in my last call list. So the phone calls in background and I don't know about it. 🙂 It happened 2 times today.

I have also similar problem, I have iPhone 5S, it was working fine but after i upgrade to ios 8.4 from ios7, it get extremely over heat and 100% battery run out within 25-30 min. It happen specially when im using 3G or 4G LTE. If i stop using Internet it cool down. does any one know any solution?