This is incorrect, and cannot be so for technical reasons. Even the Android OS team agrees on that.
Perhaps you had the "new toy" effect?
Given the way older iOS devices are often sluggish on newer OS releases, it seems entirely possible that the animations on the switched-from device were slower and less smooth than the animations on the switched-to device.
Android 4.1 and 4.2, codenamed "Jelly Bean", have been released since that time, with a "Project Butter" specifically aiming at GUI smoothness.
I haven't had a chance to use anything newer than 4.0, myself, so I'm merely pointing this out. It could be the same for all I know.
What I was going for here is that even though they didn't CREATE the movement of flat UI design, they most certainly helped its most recent resurgence in the "collective mind" by placing it back on the map with their Metro interface (which I think is actually pretty sweet yet still bears the marks of the older OS UI designs of the XP/Vista/7 era).
And I somehow feel that there's a difference in treatment between Microsoft and Apple (case in point is Microsoft brilliant technology for on-the-fly translations in video conferences which blew my mind). Just to be clear about my intentions with this here comment, I dislike Windows as an OS, switched to Linux about 10 years ago and I am currently and happily running OS X, this is not fanboy-ism.
The IM button with my old email address magically taking me to Facebook was one thing, still no freaking clue why it took me to Facebook. And then I couldn't go "Back", because there is no "Back". I tried the in-app back button - no, that was a huge mistake. So I double-tapped the home key and choose Phone or Contacts or whatever it is... and guess what? It was a completely different contact. What the hell? How am I supposed to get back to where I just was?
Android Police has a great writeup on Android design weirdness with a section titled 'The Back Button - Let's Just Rename It "Shuffle" '
http://www.androidpolice.com/2013/02/04/stock-android-isnt-p...
Contact app -> app an email address -> Gmail Compose window -BACK-> Contact app on the contact you were just on.
It takes you backward, it is what makes intents and app interaction work. I can understand why its confusing to an Apple user because there is no equivalent functionality in iOS.
Here, pretend there is no back button, yay! Android works like iOS and I'd go freaking insane. It sure as hell beats what happened to me in iOS tonight, who on Earth finds that usable? Every time one app invokes another I'm expected to go back to the homescreen and drill back down into the original app? Just shoot me.
And there's no way to tell if you're at the first "point" of the current application(in which case it will switch you to the previous one), or if it will go back to another place within the app.
And the Android OS doesn't determine what the back button does. Individual applications do. So you're dealing with an OS control button that's extremely context sensitive and application specific. You don't know what the button's going to do until you use it in any app.
I mean, come on, someone give me an example of going app->app and the back button not getting you back to where you came from.
It's not Android's fault but it does frustrate me that different apps treat the hard button differently. FWIW I would rather have it this way than the way Apple handles it.
That's not really true. The vast majority of iOS apps with nested pages will have breadcrumb navigation at the top, with a big button either saying "Back" or telling you exactly where you will be going back to.
When you launch from one app into another, that's a different matter. I agree that can be annoying/confusing. But no more annoying/confusing than I've found with Android, where I've had some apps go back to the calling app and others going back up their internal chain (to what would normally be the parent screen of the one that you've landed on).
I for one will miss the current iOS design. I'm 1 year into Android and I'm still way faster on iOS. There is a clear distinction between what is interaction vs. what is not and my eye instantly maps out the interactive elements on the screen.