Erm. So why would my phone get killed by Apple? By doing something it wasn't designed for? I don't need to unlock it, it works fine as it is, same as the hardware works as fine as it is. Doesn't overheat, doesn't freeze, doesn't switch itself off, battery is still working absolutely fine...
*cough* iOS version 11.3.1 is what I'm on currently.
https://support.apple.com/en-gb/HT201222
So what point are you trying to make exactly? That at some point down the line Apple will stop supporting it? That's actually kind of inevitable. Got to say though, Apple have been FAR superior to supporting their hardware and software than ANY Android phone I've ever had.