I upgraded my iPad Air 1 to iOS 9, but then because of iOS 9, the app switcher changed and it's so hard to use! Too bad I can't downgrade anymore because I didn't back my data up before upgrading and now Apple stopped signing iOS 8.4. I just wish they'd bring back the old app switcher (the one that shows the app icon at the bottom and has the "recent contacts" thing that you can turn off) because the new one is so annoying! Instead of displaying the running apps in a line like in iOS 7 and iOS 8, it shows it in some way where you can select the app to go to or close by swiping left or right. I wish they'd bring it back as I'm not enjoying the new app switcher at all! What can I do?