Anyone who has your cell phone number can contact you by ringing you up. However, that doesn't mean you will always want to answer. For this particular situation, or for those times when you're busy ...

The iPhone's built-in voice mail program is designed to work with any carrier in the United States and relies on the carrier to function properly. Voice mail is a feature of your cellular phone ...

You can set up your voicemail on your Android phone directly from the phone's keypad or its Voicemail app if it features one. The actual setup method varies depending on your cell phone provider and ...