$1,000 ‘throw away’ phones because batteries not consumer replaceable. No used phone market for same reason.
WHAT? The resale value of iPhones is far above the resale value of any Android phone because people want them! I've sold my used iPhones for as much as 60% of their original price after two years of use when I've bought a new one. Try getting that much for a two year old Samsung Galaxy anything.
Working iPhone 7 models on ebay are for sale right now between $375 to $599. There are 10,600+ of just iPhone 7 on eBay. New ones are available on Apple.com for $549.00.
The best ways to sell or trade in your iPhoneCNet
So much for your "no used phone market" claim.
I had the batteries on my 5 and 6 replaced. It was not difficult.