Happy to explain. But first, your question. I hope you will eventually answer some of mine too.
I have no idea. He might be completely mystified by the phone. I’d say he would have some greater chance of comprehending the mountain bike as an artifact. But it’s hard to say.
Still, since he’s for some reason your chosen expert on ID, and you have already said he wouldn’t recognize a kangaroo or a coconut as designed, are you not agreeing that life isn’t designed? Your word, I recall, was “natural”.
Anyway, look above at my various questions that you have so far ignored.