Default [Q] My phone has two CPUs disabled

Ok I have a clone s4 but that doesn't actually matter.

In /sys/devices/system they are four CPUs cpu0 cpu1 cpu2 and cpu3. In cpu0 and 1 there are files in their which basically makes them active
But in cpu2 and 3 there are no files so that's why my phone is slow. Two of the CPUs are inactive. And the second only turns on sometimes. Can you tell me how to activate the last two CPUs .
I've tried copying the files from cpu1 to cpu3 and 4 through root browser but it says operation failed.