To conserver power or if you’ve finally had enough of being connected to everything all the time (ha!), you can easily power off your iPhone.
From any screen, press and hold the narrow black sleep/wake, on/off button on the top of the iPhone toward the right.
After a few seconds, the screen will change and at the top will display a button next to the text “slide to power off” and a button at the bottom labeled Cancel.
To power off the phone, slide the power off button from left to right, otherwise tap cancel.
To turn your iPhone on after it has been powered off, press the same on/off button on the top of the phone for a couple of seconds until the display changes. Your iPhone will turn on and reach the home screen in a few moments.
