“Open Android”

As you might have noticed, Adblock Plus for Android no longer works out of the box on non-rooted devices running Android 4.1.2 or 4.2.2, it’ll show a warning asking you to manually configure the proxy instead.

via Adblock Plus.

I maintain that Android is only as open as the carriers, handset manufacturers and Google want it to be, not as open as consumers want it to be.  And I say that as an Android user.