iPhone 1 vs iPhone 15

This is the First iPhone Deconstructed, and This is a Modern iPhone. So what's Changed?

So I know iPhones don't change much anymore, but they used to change a lot. Starting with the obvious, the cameras, speakers and vibration motors are much bigger. The circuitry is also very basic, and it only had 8 gigabytes of storage. But what I think is interesting, is what's been added,
and taken away.

You might remember when Apple removed the headphone jack, everyone freaked out. Same thing when Apple switched out their old charging port and home button. But few people remember the first iPhone didn't have a selfie camera or wireless charging. Smartphones have come a long way, look,

Sources:
https://gridstudio.cc/products/iphone-1st-generation