Chapter 12. Keep Your iPhone Secure

By default, the iPhone doesn't enable security measures that would prevent someone else from using it, should it be lost, stolen, or temporarily "borrowed" without your knowledge. However, you can enable a variety of optional security features, such as Passcode Lock and SIM PIN lock.

In this section, I first help you set up a passcode lock and a SIM PIN lock, and then I discuss how to Handle Other Passwords (p. 189) for services such as secure Web pages, email accounts, and voicemail. Finally, I discuss how to Use a VPN (virtual private network) (p. 193), which you may wish to do when you access the Internet from a public hotspot or other remote location.