Zte Z668C User manual

Edition Time: March 2014
Manual No.: Z8090161500MT
Z668C
User’s Manual

Table of Contents
2
About This Manual
Thank you for choosing this ZTE mobile device. In order to keep your device in its best
condition, please read this manual and keep it for future reference.
Copyright © 2014 ZTE CORPORATION
All rights reserved.
No part of this publication may be quoted, reproduced, translated or used in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without the
prior written permission of ZTE Corporation.
Notice
ZTE Corporation reserves the right to make modifications on print errors or update
specifications in this manual with-out prior notice. This manual has been designed with the
utmost care to ensure the accuracy of its content. However, all statements, information
and recommendations contained therein do not constitute a warranty of any kind, either
expressed or implied. Please refer to chapter For Your Safety to be sure to use your
phone properly and safely.
We offer self-service for our smart terminal device users. Please visit the ZTE official
website (at www.ztedevice.com) for more information on self-service and supported
product models. Information on the website takes precedence.
Disclaimer
ZTE Corporation expressly disclaims any liability for faults and damages caused by
unauthorized modifications of the software.
Images and screenshots used in this manual may differ from the actual product. Content in
this manual may differ from the actual product or software.
Trademarks
ZTE and the ZTE logos are trademarks of ZTE Corporation.
Google and Android are trademarks of Google, Inc.
The Bluetooth® trademark and logos are owned by the Bluetooth SIG, Inc. and any use of
such trademarks by ZTE Corporation is under license.
microSDHC Logo is a trademark of SD-3C, LCC.
Other trademarks and trade names are the property of their respective owners.

Table of Contents
Qualcomm Snapdragon™ processors are products of Qualcomm Technologies, Inc.®
Qualcomm and Snapdragon are trademarks of Qualcomm Incorporated, registered in the
United States and other countries. Used with permission.

Table of Contents
4
Installing the Battery and a microSDHC Card.................................................... 1
Charging the Battery........................................................................................... 2
To lock the screen and keys:............................................................................ 3
To unlock the screen and keys:........................................................................3
Using the Touch Screen...................................................................................... 3
Getting to Know Your Phone.............................................................................. 5
Key Functions..................................................................................................6
Home Screen...................................................................................................7
Arrange & work with apps................................................................................7
Changing the System Language......................................................................... 8
Protecting Your Phone With Screen Locks........................................................ 9
Before turning on encryption, prepare as follows:........................................... 10
When you’re ready to turn on encryption: ....................................................... 10
Monitoring the Phone Status............................................................................ 12
Managing Notifications ..................................................................................... 13
Opening/Closing the Notification Panel .......................................................... 14
Responding to or Removing a Notification ................................................... 14
Managing Shortcuts and Widgets .................................................................... 14
Adding Shortcuts and Widgets....................................................................... 14
Moving Shortcuts or Widgets ......................................................................... 14
Removing Shortcuts or Widgets..................................................................... 14

Table of Contents
Adjusting Widget Size ....................................................................................14
Organizing With Folders....................................................................................15
Creating a Folder ...........................................................................................15
Renaming a Folder.........................................................................................15
Adding Shortcuts to a Folder..........................................................................15
Removing Shortcuts From a Folder................................................................15
Rearranging the Favorites Tray ........................................................................15
Removing Items From the Favorites Tray.......................................................15
Adding Items to the Favorites Tray.................................................................15
Entering Text......................................................................................................16
Changing Input Method..................................................................................16
Android Keyboard ..........................................................................................16
Google Voice Typing......................................................................................17
Touch Input Settings ......................................................................................17
Opening and Switching Apps............................................................................17
Opening an App.............................................................................................17
Switching Between Recently Opened Apps....................................................18
Connecting to Mobile Networks........................................................................19
Enabling or Disabling Data Access.................................................................19
Enable Always-on Data Access......................................................................19
Getting Data Services When Roaming............................................................19
Connecting to Wi-Fi...........................................................................................19
Turning Wi-Fi On and Connecting to a Wi-Fi Network.....................................19
Getting Notified of Open Networks..................................................................19

Table of Contents
6
Adding a Wi-Fi Network ................................................................................. 20
Forgetting a Wi-Fi Network............................................................................. 20
Adjusting Advanced Wi-Fi Settings................................................................. 20
Connecting to Bluetooth Devices..................................................................... 20
Turning Bluetooth On/Off............................................................................... 20
Changing the Device Name ........................................................................... 21
Pairing With Another Bluetooth Device............................................................ 21
Sending Data via Bluetooth............................................................................ 21
Connecting Your Phone to a Computer via USB ............................................ 22
Connecting with Windows Media®Player..................................................... 22
Disconnecting Your Phone From the Computer........................................... 22
Removing the microSDHC Card From Your Phone........................................ 22
Erasing the microSDHC Card......................................................................... 23
Connecting to Virtual Private Networks........................................................... 23
Adding a VPN .................................................................................................... 23
Connecting to a VPN ..................................................................................... 23
Modifying a VPN............................................................................................ 24
Placing and Ending Calls.................................................................................. 25
Placing a Call by Dialing ................................................................................ 25
Ending a Call................................................................................................. 25
Answering a Call............................................................................................ 25
Rejecting a Call.............................................................................................. 25
Working With the Call Log.............................................................................. 25
Placing a Call From the Call Log.................................................................... 25
Adding a Call Log Number as a Contact......................................................... 26

Table of Contents
Taking Other Actions on a Call Log Entry.....................................................26
Deleting the Call Log......................................................................................26
Calling a Contact............................................................................................26
Calling a Favorite Contact..............................................................................26
Switching Between Current Calls....................................................................27
Setting Up a Conference Call.........................................................................28
Adjusting Your Call Settings.............................................................................28
Editing Quick Response to Rejected Callers...................................................28
Setting Up Voicemail......................................................................................28
Setting Up TTY Mode.....................................................................................28
Setting DTMF Tones......................................................................................28
Setting Speed Dials........................................................................................28
Forwarding Incoming Calls.............................................................................29
Other Options.................................................................................................29
Internet Call Settings.........................................................................................29
Adding an Internet Calling Account.................................................................29
Configuring Your Phone to Receive Internet Calls ..........................................29
Checking Contact Details..................................................................................31
Importing Contacts From the Phone Storage..................................................31
Importing Contacts From the microSDHC Card ..............................................32
Exporting Contacts to the Phone Storage.......................................................32
Exporting Contacts to the microSDHC Card ...................................................32
Sharing Contacts............................................................................................32
Working With Favorite Contacts.......................................................................32
Adding a Contact to Favorites.........................................................................32

Table of Contents
8
Removing a Contact From Favorites.............................................................. 32
Viewing Your Contact Groups........................................................................ 33
Setting Up a New Group................................................................................ 33
Deleting a Group............................................................................................ 33
Editing a Group.............................................................................................. 33
Editing Contact Details................................................................................... 33
Setting a Ringtone for a Contact .................................................................... 33
Deleting a Contact ......................................................................................... 34
Deleting Several Contacts.............................................................................. 34
Joining Contacts............................................................................................ 34
Separating Contact Information...................................................................... 34
Adding or Removing Accounts......................................................................... 36
Adding an Account......................................................................................... 36
Removing an Account.................................................................................... 36
Configuring Account Sync................................................................................ 36
Configuring Auto Sync Settings...................................................................... 36
Syncing Manually........................................................................................... 36
Changing an Account’s Sync Settings............................................................ 36
Setting Up the First Email Account .................................................................. 38
Replying to or Forwarding an Email................................................................ 38
Marking an Email as Unread.......................................................................... 38
Deleting an Email........................................................................................... 38
Writing and Sending an Email .......................................................................... 39
Adding a Signature to Your Emails .................................................................. 39
Adding and Editing Email Accounts................................................................. 39

Table of Contents
Adding an Email Account ...............................................................................39
Editing an Email Account................................................................................39
Removing an Email Account...........................................................................40
Changing General Email Settings.....................................................................40
Opening Your Gmail Inbox................................................................................41
Switching Accounts........................................................................................41
Writing and Sending a Message........................................................................41
Adding a Signature to Your Gmail Messages...................................................41
Replying to or Forwarding a Message..............................................................42
Working With Received Attachments ...............................................................42
Searching for Messages....................................................................................42
Working With Labels .........................................................................................42
Adding or Changing a Label...........................................................................43
Adding Stars to Messages..............................................................................43
Viewing Messages by Label...........................................................................43
Changing Gmail Settings...................................................................................43
Opening the Messaging Screen........................................................................44
Sending a Text Message ...................................................................................44
Sending a Multimedia Message ........................................................................44
Replying to a Message ......................................................................................44

Table of Contents
10
Forwarding a Message...................................................................................... 45
Viewing Details About a Message .................................................................... 45
Deleting Messages or Threads ......................................................................... 45
Deleting Messages in a Thread...................................................................... 45
Delete Message Threads............................................................................... 45
Changing Message Settings............................................................................. 45
Viewing Your Calendars and Events................................................................ 46
Selecting Visible Calendars............................................................................ 46
Changing Calendar Views.............................................................................. 46
Viewing Event Details.................................................................................... 46
Creating an Event.............................................................................................. 47
Editing or Deleting an Event............................................................................. 47
Changing Calendar Settings............................................................................. 47
Signing In to See Your Friends............................................................................ 48
Adding a Friend................................................................................................. 48
Changing Your Online Status.............................................................................. 48
Chatting With Friends ....................................................................................... 48
Switching Between Active Chats.................................................................... 48
Using Group Chat.......................................................................................... 49
Ending the Chat............................................................................................. 49
Changing Google Talk Settings........................................................................ 49

Table of Contents
Organizing Your Contacts.................................................................................50
Getting Updates.................................................................................................50
Chatting With Contacts .....................................................................................50
Checking Photos ...............................................................................................50
Checking and Managing Your Profile.............................................................50
Opening the Browser.........................................................................................52
Opening a Web Page or Searching the Web...................................................52
Setting the Homepage....................................................................................52
Get Information About the Current Page ......................................................52
Working With an Opened Page .........................................................................52
Using Multiple Browser Tabs............................................................................53
Opening a New Browser Tab..........................................................................53
Switching Between Tabs................................................................................53
Downloading Files.............................................................................................53
Using Bookmarks ..............................................................................................54
Bookmarking a Web Page..............................................................................54
Editing a Bookmark........................................................................................54
Deleting a Bookmark......................................................................................54
Viewing Your Browsing History........................................................................54
Changing Browser Settings ..............................................................................54
Activating Location Services ............................................................................56

Table of Contents
12
Getting Your Location....................................................................................... 56
Searching for a Location................................................................................... 56
Getting Directions to Your Destination ............................................................ 56
Searching for Local Places............................................................................... 57
Sharing Location............................................................................................... 57
Searching With Text.......................................................................................... 59
Searching by Speaking..................................................................................... 59
Changing Search and Voice Search Settings.................................................. 59
Capturing a Photo ............................................................................................. 60
Customize Camera Settings ............................................................................. 60
Recording a Video............................................................................................. 61
Customizing Camcorder ................................................................................... 61
Opening the Gallery .......................................................................................... 63
Working With Albums ....................................................................................... 63
Viewing album contents................................................................................. 63
Sharing Albums ............................................................................................. 63
Viewing Details of an Album........................................................................... 63
Deleting Albums............................................................................................. 63
Working With Pictures ...................................................................................... 63
Retouching Your Pictures .............................................................................. 64

Table of Contents
Sharing Your Pictures ....................................................................................64
Working With Videos.........................................................................................64
Playing Videos ...............................................................................................64
Sharing Videos...............................................................................................64
Copying Music Files to Your Phone...............................................................65
Copying From a Computer .............................................................................65
Downloading From the Internet.......................................................................65
Receiving via Bluetooth..................................................................................65
Viewing Your Music Library ..............................................................................65
Setting a Song as the Default Ringtone..........................................................65
Deleting a Song..............................................................................................66
Playing Music.....................................................................................................66
Managing Playlists.............................................................................................66
Creating a Playlist..........................................................................................66
Adding a Song to a Playlist.............................................................................66
Removing a Song From a Playlist...................................................................66
Deleting or Renaming a Playlist......................................................................67
Playing Your Music............................................................................................68
Managing Playlists.............................................................................................70
Create a Playlist or Add a Song to a Playlist...................................................70
Rearranging Songs in a Playlist......................................................................70
Removing Songs From a Playlist....................................................................70
Renaming or Deleting a Playlist......................................................................70

Table of Contents
14
Opening the Video Library................................................................................ 71
Playing and Controlling Videos........................................................................ 71
Managing Video Files........................................................................................ 71
Sharing Videos .............................................................................................. 71
Renaming a Video......................................................................................... 71
Viewing Details of a Video.............................................................................. 71
Recording a Voice Memo............................................................................... 72
Playing a Voice Memo....................................................................................... 72
Playing a Memo You Just Recorded .............................................................. 72
Playing Any Saved Memo.............................................................................. 72
Alarm.................................................................................................................. 73
Setting a New Alarm...................................................................................... 73
Using the Bed Clock ...................................................................................... 73
Calculator .......................................................................................................... 73
Downloads......................................................................................................... 73
File Manager...................................................................................................... 73
Full Share...................................................................................................... 74
Sharing Media Files on Your Phone............................................................... 74
Note Pad ............................................................................................................ 75
Play Books .................................................................................................... 75
Play Movies & TV............................................................................................... 75
Task Manager .................................................................................................... 75

Table of Contents
Timer ..................................................................................................................75
World Time.........................................................................................................75
YouTube.............................................................................................................76
Browsing and Searching for Apps....................................................................77
Downloading and Installing Apps.....................................................................77
Managing Your Downloads ...............................................................................77
Viewing Your Downloaded Apps.......................................................................77
Uninstalling an App........................................................................................77
General Settings................................................................................................78
Airplane Mode................................................................................................78
Wi-Fi..............................................................................................................78
Bluetooth........................................................................................................78
Mobile Networks.............................................................................................78
Sound............................................................................................................78
Display...........................................................................................................78
Date and Time ...............................................................................................78
Language and Input .......................................................................................78
Wireless and Networks......................................................................................79
Data Usage....................................................................................................79
VPN...............................................................................................................79
Device.................................................................................................................79
Storage..........................................................................................................79

Table of Contents
16
Battery........................................................................................................... 80
Apps.............................................................................................................. 80
Connect to PC............................................................................................... 80
Personal............................................................................................................. 80
Location Services .......................................................................................... 80
Security......................................................................................................... 80
Backup and Reset ......................................................................................... 81
Accounts............................................................................................................ 81
System............................................................................................................... 81
Accessibility................................................................................................... 81
Software Updates.......................................................................................... 81
About Phone.................................................................................................. 81
Radio Frequency (RF) Energy............................................................................ 86
FCC Compliance................................................................................................ 86
Using Your Phone with a Hearing Aid Device.................................................. 87
HAC for Newer Technologies......................................................................... 88
Road Safety ....................................................................................................... 88
Driving........................................................................................................... 88
Operating Machinery...................................................................................... 89
Product Handling .............................................................................................. 89
General Statement on Handling and Use..................................................... 89
Small Children............................................................................................... 89
Demagnetization............................................................................................ 90

Table of Contents
Electrostatic Discharge (ESD) ........................................................................90
Normal Use Position.......................................................................................90
Air Bags.........................................................................................................90
Seizures/Blackouts.........................................................................................90
Repetitive Stress Injuries................................................................................90
Emergency Calls............................................................................................90
Loud Noise.....................................................................................................90
Phone Heating...............................................................................................91
Electrical Safety.................................................................................................91
Accessories....................................................................................................91
Connection to a Car.......................................................................................91
Faulty and Damaged Products .......................................................................91
Interference........................................................................................................91
General Statement on Interference.................................................................91
Pacemakers...................................................................................................91
Hearing Aids ..................................................................................................91
Medical Devices.............................................................................................92
Hospitals........................................................................................................92
Aircraft...........................................................................................................92
Interference in Cars........................................................................................92
Gas Stations and Explosive Atmospheres.......................................................93
Blasting Caps and Areas................................................................................93

Getting Started
1
Installing the Battery and a
microSDHC Card
Switch off your phone before installing or
replacing the battery. You have the option to
install a microSDHC card of up to 32GB to
expand your phone’s storage capacity. The
microSDHC card can be installed and
removed while the phone is turned on.
Unmount the microSDHC card before
removing it.
1. Place your finger in the slot at the bottom of
the back cover to lift and remove the cover.
2. Insert the battery by aligning the metal
contacts on the battery with the gold
contacts in the battery compartment. Gently
push down on the battery until it clicks into
place.
WARNING! Do not handle a damaged or
leaking Li-Ion battery as you can be burned.
3. Open memory card cover at the left side of
the phone an insert the microSDHC card.
NOTE: Your phone may come with a
pre-installed microSDHC card. Some
applications may not function normally after
you remove the card, pre-installed or
otherwise.
4. Push tightly until the card is installed in the
right position and close the card cover.
Getting Started

Getting Started
2
Charging the Battery
WARNING! Use only ZTE-approved
chargers and cables. The use of unapproved
accessories could damage your phone or
cause the battery to explode.
1. Connect the adapter to the charging port.
Ensure that the adapter is inserted with the
correct orientation. Do not force the
connector into the charging port.
2. Connect the charger to a standard AC wall
outlet. If the phone is on, you’ll see a
charging icon, such as or , appear in
the Status Bar.
3. Disconnect the charger when the battery is
fully charged.
Switching Your Phone On/Off
• Press and hold the Power/Lock Key to
turn on
your phone.
•To turn it off, press and hold the
Power/Lock Key to open the options
menu. Tap Power off and then tap OK.
Setting Up Your Phone for
the First Time
When you first power on your phone after you
purchase it or reset it to factory settings (see
Settings –Personal –Backup and Reset), you
may need to set it up before using it.
1. Tap the language field, select the language
you want, and tap Start.
2. Set the date, time, and time zone, or use
date and time data provided by the network.
Then tap Next.
3.If you have a Google™ account, tap Yes to
sign in. Tap No if you do not have an
account. Tap Get an account to create a
Google account or tap Not now to set up an
account later.
4.Configure the Google location options and
tap Next.
5.Enter your name, which the phone uses to
personalize some apps, and then tap Next.
6.You will be prompted to accept the Google