content: I think they're doing it because most phones don't have a separate chip for encryption, slowing down the phone.  That's one place Apple is lucky.. with their select few types of phones, they can make sure their newest ones have the separate chip for encryption.  I think the trick now with Android is to make sure you get a phone with the encryption chip (or wait a couple years for them all to have it) and then enable it. If you're into tracking this stuff, once you get the phone enable it right away.