The first thing is not to put the SIM card from your old phone into your iPhone. Everything else will work but you voice mail and visual mail will likely not work. If you go to an AT&T store, you can get a new SIM put in your phone and help with getting everything from your old SIM card transferred to it.

Now you are ready for the next step. Call customer service at AT&T (the exclusive iPhone service provider in the US) and tell the representative that you need to setup voice mail. Be sure to tell him or her to check to make sure the forwarding feature to forward calls to your voice mail is turned on. This is something that is often overlooked by customer service representatives. Once this is done, you are ready to actually setup voice mail.

Before you begin, it is a good idea to know what password you want to use. Might write down what you want to record as your outgoing message, too. Doing this will save time and make the process to setup voice mail go smoother.

Your password should be between 6 and 15 characters. Make sure it is something you can remember but others will find impossible to guess. Now you tap the voice mail icon on your iPhone. You will be asked to create a password at this point. Enter the password you have created and then you will be asked to record a greeting. You will have the option of using a default iPhone voice mail greeting that will include your phone number or you can record your own. You can change your greeting at any time by tapping voice mail, greeting, custom and then record. Do not forget to save your greeting once you are satisfied with it.

Students at Penn state who subscribe to Penn iPhone can log in to My iPhone and setup voice mail for their iPhones. PennKey authentication will be required. Once on the home page, look for Features and Voice Mail and go to that page. Here, you will put in the password you have created. You can change this password at any time by logging in on My iPhone or through the voice mail icon on your phone. After you have entered your password, re-enter it is the field, Confirm Password. After up press the submit button, your account will be updated to include it.

To record your greeting, press the 'messages' button, it will be to the right of the keypad. Press '0' to bring up the mailbox options. From there, you will be prompted to choose the type of greeting you want, such as busy, unavailable and name. Then you will get a prompt from the system to record your greeting. When you are finished, choose accept, listen and, if you desire, re-record. When you are satisfied with your greeting, press * or # to go back to the menu or exit.