Push the button with the corresponding number.
Hit the Menu button, go to Prepaid (it should be the one that comes up first) and then go to My Phone Number under that list.
well it's something that helps you connect with other people you dial it into your phone and u can speak with your mates otherwise in your case imaginary friends since you dont know what a phone...
Yes you can. You need to subscribe to a telecom company in order for you to get one.