to start off... No, Univ of Phoenix is not like Devry, Devry actually has physical campuses, UoP does not.
It is incorrect to say that you cannot transfer any of your credits from Devry, but many do not transfer. Something like math, English, or psychology should transfer to another school. I would verify with your advisor just to make sure that they will accept credits from UoP, many colleges don't like credits from online-only schools
and would gladly take them from Devry or similar institutions.
I personally do not like UoP or their practices, so take my opinions with a grain of salt.