So, I don't know a lot about the internal workings of these phones, but I was under the impression that a phone manages its transmit power depending on the sign

So, I don't know a lot about the internal workings of these phones, but I was under the impression that a phone manages its transmit power depending on the signal strength. IF that's the case: Wouldn't your solution turn the device into a pocket heater that dies a couple of hours early? What is the benefit of this 'clever' solution, if all you really want seems to be to turn it off..?