A revolutionary new idea
The major issue with phones is replacing the battery - this is just a horrible thing to try and do when the phone is glued everywhere and made of thin glass. So why not a new approach to construction - make a small compartment on the rear that can be opened. then pull out the old battery, and pop in a new one? I think I will file a patent on this idea! Oh wait, was this done in the ancient past? Has someone pulled an old fossilized phone out of the recycle bin?
When I was a kid cigarettes were the most profitable products, people would buy them and burn them, nowadays phones are mush more profitable, nice smooth cases so people buy them and drop them.