You'd think it would be easy to turn off your iPhone, right? Just press that power button, and job done.
Except that button you think is a power button -- presumably because you press it to turn the iPhone on -- is not a power button but a "side button."
And pressing that side button on newer handsets doesn't turn them off. Instead, it brings up Siri.
This explains the question that just dropped into my inbox: How in the name of the power button's ghost do your turn an iPhone off?
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There are two ways.
The easiest way is to simultaneously press and hold down one of the volume buttons -- up or down -- along with the side button.
Yes, you have to press two buttons.
I guess Apple doesn't think you're going to want to turn your phone off that often.
Hold long enough -- a few seconds -- and the power slider will appear, along with the really cool but noisy emergency SOS slider at the bottom.
There's another way to power down an iPhone, a way that I think is quicker and easier.
Tap on Settings > General and scroll all the way down to the bottom and tap Shut Down.
So, there you go. You learned two things today. The power button is, in fact, a side button, and shutting down an iPhone is more complicated than you guessed it was.