Although the iPhone is designed to go into sleep mode after a pre-defined period of inactivity, it still loses power in this state. Furthermore, if the user is in a meeting or another location where he or she does not want the phone to wake-up when receiving a phone call or text, then the phone must be turned off as sleep mode does not keep the device in the “Off” state. Other times, if the iPhone’s battery is low on power, the user may want to preserve battery life to make outgoing calls and will need to turn off the iPhone to do so.

How to Turn off the iPhone

Step 1 – Hold the “Sleep” or “Wake” button at the upper, right-hand corner of the iPhone for one to three seconds.

Step 2 – A subsequent screen will ask that a slider is moved across the screen to turn off the iPhone. If necessary, touch the “Cancel” button to avoid turning off the device.

Step 3 – Slide the slider to the right to turn off the iPhone. A progress display will appear, then the phone will turn “Off.” No incoming calls, emails, or texts can be received until the phone is turned “On.”

How to Turn on the iPhone

Step 1 – Hold the “Sleep” or “Wake” button down until the Apple icon appears on the iPhone screen.

Step 2 – Let go of the “Sleep/Wake” button and allow the iPhone to proceed through the iOS boot process. The phone will now be in the “On” state.

How to Charge the iPhone Battery

Step 1 – Connect the white USB charging cable to the iPhone.

Step 2 – Plug the cable into a USB port on a computer that is turned on or connect to the Apple wall adapter and plug into an open electrical socket.

Step 3 – Observe the state of charge on the iPhone display. The battery will turn “Green” when fully charged.