Just that I could be looking at a > 75% performance reduction on the same phone compared to when it was new due to the combo of battery degradation, security fi

Just that I could be looking at a > 75% performance reduction on the same phone compared to when it was new due to the combo of battery degradation, security fixes and ios9 to ios11 general slow down. I think that if they've disabled some cpu core features that might reduce the maximum power loading anyway and make the double whammy impact of security and battery related slowdown unnecessary.