A typical Turkish national scavenger / homeless person can't have an Internet presence. They are too poor and too concerned with survival. Besides, such a person wouldn't be able to speak English at all.
So would he even know what an iPad/smarphone was and/or its value? Would the motive not be robbery then?
If they are so concerned with survival, why would they resort to criminal acts, knowing this could put them in the hands of LE. What if this guy, covered in mud, had tried to help her?