To install a standalone qube, see the doc:
To use android, there are also other solutions.
e.g.
Android x86
https://github.com/unman/notes/blob/master/InstallingAndroid.md
Android Bliss
https://forum.qubes-os.org/t/alright-guys-i-got-us-this-far-lastest-android-bliss-v15-8-6-working/19357
There are a lot of thread in the forum:
https://forum.qubes-os.org/search?q=android
If you success installing and using Prime OS, report back. 
ps: can someone move this to user support.