Some androids were discarded so long ago that they have degenerated to the point where it is impossible to tell what their original function was.
Markus encountered Phileas in a dump of disused androids. Clearly deviant, Phileas recognized deviancy in Markus also and urged him to find “Jericho” – ‘a place where our kind live in freedom’- before shutting down permanently.
Phileas seems stuck in junk pile of mud and androids. He carried a key to locate Jericho, which is copied to Markus and the latter uses it to find the freighter.