How to Delete all data from your iPhone SIM card

You know how it goes - every year they've got new and better technology available and you're left wondering how you're going to afford it. You could always sell your current stuff, of course, but how do you sell your iPhone without selling all your friends' information? In this video you'll learn how to reset your iPhone to wipe its SIM card which will also delete your contacts from it. If you're feeling extra paranoid, you can even go ahead and remove the from the phone. Now all you have to do is compete with the rest of the outdated iPhones on Ebay.