@mcSlibinas @etbe Worth noting that in the six months after Apple releases the thinnest, best iPhone ever each year, it would receive several million two-year-old iPhones as trade-ins.
So you could theoretically reflash several million units of nearly identical hardware with embedded Linux (or QNX), remove the batteries (and screens?).
You would then have several million near-identical motherboards ready for second life embedded in appliances or sensors.