Why has Apple ruined my phone with IOS 9
Been an Apple iPhone and iPad user for over 4 years and suddenly with the latest iOS 9 update Apple have ruined my pleasure if using it. I now have the screen blacking out when opening some apps; non recognition of contacts when receiving texts; problems using my headset to make voice calls. If only I could go back to IOS8.4.2. I only updated as I am going into the Apple Store to check my battery so need to have the latest IOS,
Have tried the various "solutions" tried by loads of users with similar problems.
So Apple please sort this out as Samsung etc are looking far more appealing now
iPhone 5s, iOS 9.0.2