Chosen Solution

I have a few scrap phones and I was wondering if I should sell them for parts or scrap or send it to Apple to recycle. Any advice will be welcome.

I would sell it for spare parts (not spares or repair). Some people are still holding on to and iPhone 6 or 7 and could use the parts. In addition, when things like batteries are recycled, they can’t actually get much out of the raw materials. I would only sell them for a couple of dollars + shipping.