Camera is better on the regular S4 and I don't like the physical buttons on the Active.
Originally Posted by lotus49
They didn't, Google did. It apparently caused problems for some people or phones although it never caused me any trouble.
If you are prepared to root your phone and have a fast reliable SD card, this is all a bit of a non-issue as there are simple ways round the restrictions (eg using foldermount).
It caused problems for people who continued hot swapping sdcards when using apps2sd and then couldn't figure why some of the apps didn't work.