[NekkoDroid]

> you can't actually turn an iPhone off

I don't know about iPhone, but my Galaxy S21 doesn't turn off when you hold the power button, you need to pull down the notification area 2x (for the more detailed buttons) and turn off from there. There is an option for changing power button back to showing the power menu, but it wasn't the default (and writing this made me look for it and change it, should kinda tell you how often I actually need it...).

[exabrial]

iPhones, even when "turned off", run microcode 24/7 and allows them to participate in the "Find My" network. They are never truly powered off.