In 2009, Apple introduced the "Find My iPhone" feature, which allows users to track where their iPhone is located. However, you can also use "Find My iPhone" to track other iPhone users if you know their Apple ID and password, which makes some iPhone users a bit wary about this feature. If you want to disable "Find My iPhone" and make your iPhone untrackable, you can do so in a few simple steps, through the device's "Settings" menu.
Tap the "Settings" icon on the device's home screen to open the Settings menu.
Tap the "Mail, Contacts, Calendars" option on the Settings menu.
Tap the "MobileMe" account below the "Accounts" heading on the "Mail, Contacts, Calendars" screen.
Slide the "Find My iPhone" slider to the "Off" position to disable the feature. Now, no one will be able to track your iPhone through the "Find My iPhone" feature.