This is incorrect; the M-series chips all use standard LPDDR4X (M1) or LPDDR5 (M2/M3) chips, not part of the SoC, and soldered directly next to the CPU. The SSDs are also standard NAND chips, again external to the SoC, connected via PCIe.

Sorry if my post was confusing. The first point was referring to cables for iPhones before the latest iPhone 15 models — previously, you’d get a cable that was standard USB-C on one end, and Lightning (the proprietary connector) on the other. You could use those cables along with any standard USB-C charging brick to charge the phone. My point was that the charging brick does not need to be proprietary, and the proprietary part (the cable) was included with the phone.

All iPhone 15 models use completely standard USB-C and come with a C to C cable in the box.

1. If by “charger” you mean the brick that plugs into the wall, which I hope you do because it’s the only thing that Apple omits from the box, then Apple also uses that same cable type (USB type C). It’s only the other end of the cable that is proprietary. And the cable itself is included with the phone.

2. All of this is moot for the iPhone 15 pro and non-pro which are fully USB type C.