Protecting Your SIM Card with a PIN, Tap Change SIM PIN | AT&T Z990

Sorting Out Your Phone Settings

Disabling Screen Unlock Security

If you have created an unlock pattern, PIN or password, you can disable it.

1.Press the Menu Key > Settings > Location & security > Change screen lock.

2.Draw the screen unlock pattern or enter the PIN/ password you have created.

3.Tap None.

Protecting Your SIM Card with a PIN

Every SIM card comes with a PIN. The initial PIN is provided by your mobile phone carrier. It’s best to lock your SIM card as soon as you can.

1.Press the Menu Key > Settings > Location & security > Set up SIM card lock.

2.Tap the Lock SIM card check box.

3.Enter the PIN you’ve been given and tap OK.

Changing Your SIM Card PIN

You can change the PIN you’ve been given to one easier for you to remember and harder for others to guess.

1.Press the Menu Key > Settings > Location & security > Set up SIM card lock.

2.Make sure you already checked the Lock SIM card check box.

3.Tap Change SIM PIN.

4.Enter the old PIN and tap OK.

5.Enter your new PIN and tap OK.

6.Enter the new PIN again and tap OK.

Restoring a Locked SIM Card

Put all your confidential passwords in a safe place for future use. If you enter the wrong SIM card PIN more times than allowed, your SIM card will be locked and you cannot access the mobile phone network. Contact your operator for a PIN Unlock Key (PUK) to restore the SIM card.

Setting up Credential Storage

This allows you to select applications to access secure certificates and other credentials.

Enabling Secure Credentials

1.Press the Menu Key > Settings > Location & security.

2.Tap Set password and create a password for the credential storage.

3.Tap OK.

TIP: You can also install encrypted certificates from your microSD card by tapping Install from SD card.

Deleting Secure Credentials

1.Press the Menu Key > Settings > Location & security.

2.Tap Clear storage to clear credentials.

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AT&T Z990 user manual Protecting Your SIM Card with a PIN, Setting up Credential Storage, Changing Your SIM Card PIN

Contents

AT&T Avail Legal Information Table of Contents Table of Contents Installing the SIM/microSD Card and Battery Getting StartedStarting Up Charging the Battery Switching Your Phone On/OffGetting Started Removing the Battery SIM/microSD Card Setting Up Your Phone for the First Time Getting Started Switching to Sleep Mode Display Screen timeoutGetting Around Waking up Your Phone Getting to Know Your Phone Getting StartedHeadset Jack Earpiece Touch Screen Getting Started Key Functions Getting Started Home Screen Extended Home ScreenAdding Items to Your Home Screen Removing Items from Your Home Screen Indicator What it means Getting Started Status and Notification Icons Content downloaded and installed successfully Getting Started Using the Notification Panel Re-open Recently Used ApplicationsTIP You can also open the Notification Panel By pressing the Menu Key Notifications from the Home Screen How to Make Calls How to Receive CallsPhone Calls Adjusting Your Call Settings Contacts Importing Exporting ContactsSharing Contacts Information Contacts Adding a Contact to Favorites Searching for a ContactCreating a New Group Tap at the bottom of the Contacts Screen Entering Text Android KeyboardXT9 Text Input Keyboard Choosing Touch Input Settings Using the toolbarKey Settings Language & keyboard Entering Text Changing Message Settings MessagingMessage Box Sending a Message Signature settings MessagingAdd signature Add the signature to all outgoing messages Creating an Email Account Receiving EmailsComposing and Sending an Email Press the Menu Key Compose from the Inbox Screen Email Settings Replying to or Forwarding an EmailDeleting an Account Turning on Wi-Fi Connecting to a Wi-Fi NetworkChecking the Wi-Fi Network Status Getting Connected to the Internet Using the Phone as a Modem Using the Phone as a Wi-Fi HotspotGetting Connected to the Internet Enabling the Phone as a Modem Getting Connected to the Internet Enabling the Wi-Fi Hotspot Disabling the Wi-Fi Hotspot Using Bookmarks Changing Browser SettingsBrowsing the Internet Browsing Options Bluetooth Status bar Making the Most of Multimedia Taking Pictures with Your CameraShooting Video with Your Camcorder Playing Your Music Setting a Song as Ringtone Playing Your VideosMaking the Most of Multimedia Creating Playlists Opening Your Gallery Making Memorable MemosPress the Home Key Sound Recorder Home Key Music Playlists My recordings Using Your Google Applications Using Google CalendarUsing Google Talk Gmail Using Your Google Applications Changing Your Online Status Google PlacesGoogle Latitude Starting a Chat Sorting Out Your Phone Settings Setting Time and DateChanging Display Settings Sound Settings Mobile Network Services Security SettingsSorting Out Your Phone Settings Protecting Your Phone with a PIN or Password Setting up Credential Storage Protecting Your SIM Card with a PINChanging Your SIM Card PIN Tap Change SIM PIN Privacy Reset to Factory Settings How to Install an ApplicationPress the Menu Key Settings Storage Managing Your Device Memory Managing Other Settings Other Applications For Your Safety General Safety For Your Safety Radio Frequency RF EnergyFCC Compliance FCC ID Q78-Z990 Road Safety Product HandlingDriving Operating Machinery Electrostatic Discharge ESD AntennaSmall Children Normal Use Position Electrical Safety Interference Explosive Environments Gas Stations Explosive AtmospheresBlasting Caps and Areas Specifications Support microSD card, max. capacity 32GB Warranty How To Get Warranty Service Other Warranty ProgramWarranty