[AC Question]

Any ideas?
I have a galaxy prevail lte.

basically need it to hold something that's about the size of my phone (maybe not quite as thin, but very close), and be able to slide it out from beneath...

[Rukbat]

Talk to a custom leather case maker - I doubt that you'll ever find a "stock" case like what you're looking for. (Maybe he can add something onto the back of an existing case.)