Seniors should know the features of iPhone 4S devices

Seniors should know the features of iPhone 4S devices

You need more information about the buttons and other physical features of the iPhone 4S than mentioned in the documentation. This is a picture of the iPhone with callouts for the buttons you’ll find on it.
 
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Here’s a summary of the various hardware features and what they do:
Home button (the very important): On the iPhone, you can go back to the home screen to find just about anything. The home screen displays all the installed and pre-installed apps and gives you access to your iPhone settings. No matter where you are or what you’re doing, push home and you’ll be back at home base.
You can also double-click the home button to pull up a scrollable list of apps so you can quickly switch from one app to another.
On/Off Button: You can use this button to turn your iPhone on, put it to sleep, wake it up, or turn it off.
Dock Connector Slot: Plug the Dock Connector into a USB cable to charge the battery or sync iPhone with your computer.
Cameras: The iPhone 4 and 4S offer front and back cameras that you can use to take photos or videos. The back is in the upper-right corner, and you have to be careful not to put your thumb over it when taking pictures.
Ring / Silent key: Slide this small switch to mute or unmute the sound on your iPhone.
Speaker (small and powerful): The iPhone has a nice little sound system, which produces a lot of sound from such a small speaker. The speaker is located on the bottom edge of the phone, just below the Home button.
Volume buttons: Press the volume up button for more volume and the volume down button for less. With iOS 5, you can use the Volume Up button as a shutter button when the camera is activated.
Headphone jack and microphones: If you want to listen to your music in private, you can plug in an iPhone headphone (which gives you two-way audio) or mini 3.5mm headphones.

Read more: The iPhone’s Cameras: Specifications and Features

Two microphones (one on the top and bottom of the phone) allow you to talk to your iPhone to do things like make phone calls using the Internet, video call services, or other apps that accept voice input like Siri’s built-in Assistant.
Receiver: The grille in the upper front of the device through which you hear.
SIM card tray: The small slot for your carrier’s SIM card that allows your phone to connect to your carrier and store data such as contacts in memory.
LED flash: The flash device for built-in cameras.