I have the AT&T and T-Mobile versions sitting here, and the AT&T version does not allow you to disable applications. Ridiculous...
Just the At&t apps or any apps at all? Try disabling duo or lookout. Thats the only 2 I have disabled at the moment. I know the T-Mobile app cant be disabled which sucks since its a battery hog. I had to log out and hide it so it would stop running.