Re: power consumption?
The power consumption claims for a phone a bit disingenuous given RF transmit power, screen lighting and screen driving.
Also the best use for most of those transistors is RAM, or maybe Flash, but Flash is rather different in construction. 1G RAM per core and little shared RAM to reduce bottlenecks, like Transputers.
Also the BC108 chips are maybe 1 mm x 1 mm by maybe 0.1mm to dissipate power. But you can run them at 1.2V supply and a 1 or 1 uA per device. You need more then because gain is low. I did once make a matchbox radio for MW/LW with a soldered in AAA cell that lasted nearly 6 months and no power switch. Ceramic earphone.