In not sure that this one really makes sense. The headphones are analog devices. Someone could easily get by with a new in box original DT990 (or whatever) from decades ago. But, an original iPhone from 15 years ago may not even work completely on some networks with its 3G receiver. I think most are already shutdown and that's before you even consider any of the other upgrades. Comparing headphones to a hammer would probably make more sense.