Security features help protect the information on iPhone from being accessed by others.
You can set up a passcode that you must enter each time you turn on or wake up iPhone.
Choose General > Passcode Lock and enter a 4-digit passcode, then enter the passcode again to verify it. iPhone then requires you to enter the passcode to unlock it or to display the passcode lock settings.
For addition information about using a passcode lock, see Passcode Lock.
In Settings, choose General > Passcode Lock and turn Voice Dial off. Unlock iPhone to use voice dialing.
The Find My iPhone feature helps you locate iPhone if it’s been lost or misplaced, and display a message on your iPhone to help someone return it to you. It includes Remote Wipe, which lets you erase all your information on iPhone in case you don’t recover it. The Remote Passcode Lock feature lets you remotely lock your iPhone and create a new or replacement 4-digit passcode.
Find My iPhone requires a MobileMe account. MobileMe is an online service, available by subscription. Go to www.apple.com/mobileme for more information.
To enable this feature, turn on Find My iPhone in your MobileMe account settings. See Setting Up Accounts.
Log in to your MobileMe account at www.me.com and go to the Find My iPhone pane. Follow the onscreen instructions to locate your device on a map and display a message on its screen along with an optional sound to help you find it.
Log in to your MobileMe account at www.me.com, then go to the Find My iPhone pane. Click “Remote Wipe…,” and follow the onscreen instructions.
A remote wipe is equivalent to the “Erase all content and settings” feature in Settings. It resets all settings to their defaults and erases all your information and media. See Resetting iPhone.
Log in to your MobileMe account at www.me.com, then go to the Find My iPhone pane. Click Remote Passcode Lock, and follow the onscreen instructions.