Summary
The main purpose of the iPhone is to make and receive phone calls. Making and receiving a phone call is fairly straightforward, but there are additional options you might want to use, such as creating a conference call, putting someone on hold, or using a keypad to choose different options while calling an automated service.
To help identify callers, it's best to store their names and phone numbers in the Contacts app. That way, the person's name will appear on the iPhone screen when they call, so you never have to guess.
Since you'll likely get unwanted calls, make sure you know how to block and unblock callers. You'll never be able to stop all unwanted calls, but by blocking certain phone numbers, you can make sure unwanted callers can't pester you anymore.
Making and receiving phone calls is a major use for your iPhone. However, there are other ways to communicate as well, such as text messaging, which many people use just as often as talking...