What happened with your S3? My battery life was cut in half, GPS was so far off it was unusable and I use it a lot. I swapped to a 6 Plus when that happened. It was my first Apple product.
I could be wrong here but didn't the 4.04 enable device encryption which was similar what happened to iOS 7 and iPhone 4.
The difference with Android 4.04 was that you could turn it off to boost performance.
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The NSA can't track your browsing history/habits as easily if you are allowed to delete it. So consider this an NSA feature.
Well its fixed in 10.3.2 now I consider my phone NSA proof ;-)