Just to be clear about a detail:
Apple is not slowing down iOS, Apple is probably changing the frequency scaling and scheduling of cores.
Remember that Apple proudly introduced low-power cores in recent phones.
Every CPU core has clock speed scaling based on load to control thermal load.
So, iOS does not change during updates, it's the code that controls the CPU frequency scaling and power management.
You certainly do not find this in the Frameworks themselves.
Just to clarify that iOS and its Frameworks are identical for all models.
Only the way the hardware is controlled changes. Probably based on model number and battery capacity.
People sound like Apple would constantly changes the iOS code itself, which is far too complex to maintain.
Apple is not slowing down iOS, Apple is probably changing the frequency scaling and scheduling of cores.
Remember that Apple proudly introduced low-power cores in recent phones.
Every CPU core has clock speed scaling based on load to control thermal load.
So, iOS does not change during updates, it's the code that controls the CPU frequency scaling and power management.
You certainly do not find this in the Frameworks themselves.
Just to clarify that iOS and its Frameworks are identical for all models.
Only the way the hardware is controlled changes. Probably based on model number and battery capacity.
People sound like Apple would constantly changes the iOS code itself, which is far too complex to maintain.