LG Viper LS840 User manual

User Guide
©2012 Sprint. Sprint and the logo are trademarks of Sprint. Other marks are trademarks of their
respective owners.
All materials in this guide including, without limitation, the design, the text, and any marks are
the property of LG Electronics, Inc. Copyright © 2012 LG Electronics, Inc. ALL RIGHTS
RESERVED. LG and the LG logo are registered trademarks of LG Electronics, Inc. LG VIPER™
4G LTE is a trademark of LG Electronics, Inc. The Bluetooth®word mark and logos are
registered trademarks owned by Bluetooth SIG, Inc. microSD™ is a trademark of SanDisk.
Other trademarks and trade names are those of their respective owners. Unless otherwise
specified herein, all accessories referenced herein are sold separately. All features, functionality,
and other product specifications are subject to change. Screen shots are simulated and subject
to change.

Important Messages
Important Messages
IMPORTANT: If the account type you want to set up is not in the phone database, you will be
asked to enter more details. You should get all pertinent information for the email
account such as incoming and outgoing server settings before you proceed.
WARNING: Use only Sprint-approved or manufacturer-approved batteries and chargers with
your phone. The failure to use a Sprint-approved or manufacturer-approved
battery and charger may increase the risk that your phone will overheat, catch
fire or explode, resulting in serious bodily injury, death or property damage.
Notice: NFC antenna for this model is on the battery cover and this battery cover is the
only one that is offered with the model.

TOC i
Table of Contents
Get Started ................................................................................................................................ 1
Your Phone at a Glance...................................................................................................... 1
Set Up Your Phone............................................................................................................. 2
Activate Your Phone........................................................................................................... 2
Make Your First Call ........................................................................................................... 3
Set Up Your Voicemail........................................................................................................ 4
Sprint Account Information and Help................................................................................... 4
Sprint Account Passwords........................................................................................... 4
Manage Your Account................................................................................................. 5
Sprint Support Services............................................................................................... 6
Phone Basics............................................................................................................................. 7
Your Phone Overview......................................................................................................... 8
View the Display Screen....................................................................................................10
Turn Your Phone On and Off.............................................................................................13
Lock and Unlock Your Phone .....................................................................................14
Battery and Charger...........................................................................................................14
Extend Your Battery Life.............................................................................................16
Phone Function Keys.........................................................................................................17
Menu Key...................................................................................................................18
Work with Menus........................................................................................................18
Notifications Panel......................................................................................................20
Home Key...................................................................................................................21
Back Key....................................................................................................................21
Search Key.................................................................................................................21
Touchscreen Navigation....................................................................................................21
Your Home Screen............................................................................................................22
Home Screen..............................................................................................................23
Extended Home Screens............................................................................................23
Use the Applications Key............................................................................................24
Applications: How to View, Open and Switch..............................................................24

TOC ii
Applications................................................................................................................26
Customize Your Home Screen....................................................................................28
Add and Remove Widgets on the Home Screen.........................................................30
Change the Phone's Wallpaper ..................................................................................30
Customize Applications Icons on the Home screen ....................................................31
Access Recently-Used Applications............................................................................32
Home Screen Clean View...........................................................................................32
Change the Screen Orientation...................................................................................32
Enter Text With the On-screen Keyboard...........................................................................33
Search Your Phone and the Web.......................................................................................35
Phone and Web Search Using Text Entry...................................................................35
Phone and Web Search Using Voice Command.........................................................36
Phone Calls ..............................................................................................................................38
Make Phone Calls..............................................................................................................38
Call Using the Phone Dialer........................................................................................39
Dialing Options...........................................................................................................39
Missed Call Notification ..............................................................................................40
Call Emergency Numbers...........................................................................................40
In-Call Options............................................................................................................41
Dial and Save Phone Numbers With Pauses..............................................................41
Dial From the Contacts List.........................................................................................42
Use Direct Dialing.......................................................................................................42
Plus (+) Code Dialing..................................................................................................42
Receive Phone Calls..........................................................................................................43
Visual Voicemail ................................................................................................................44
Set Up Visual Voicemail..............................................................................................44
Review Visual Voicemail.............................................................................................45
Listen to Multiple Voicemail Messages .......................................................................46
Configure Visual Voicemail Options............................................................................46
Configure Visual Voicemail Settings...........................................................................47
Change Your Main Greeting via the Voicemail Menu..................................................48
Edit the Display Name via the Voicemail Menu...........................................................48
Voicemail(Traditional)........................................................................................................48

TOC iii
Set Up Voicemail........................................................................................................48
Voicemail Notification .................................................................................................49
Retrieve Your Voicemail Messages ............................................................................49
Phone Call Options............................................................................................................50
Caller ID .....................................................................................................................50
Call Waiting ................................................................................................................50
3-way Calling..............................................................................................................51
Call Forwarding ..........................................................................................................51
In-call Options.............................................................................................................52
Set Up Speed Dialing.........................................................................................................53
Call Logs............................................................................................................................54
Save a Phone Number.......................................................................................................56
Find a Phone Number........................................................................................................57
Voice Dialer .......................................................................................................................57
Text-to-Speech..................................................................................................................58
Settings.....................................................................................................................................60
Wireless & Networks Settings............................................................................................60
Wi-Fi Settings.............................................................................................................60
Bluetooth Settings.......................................................................................................61
Data Usage.................................................................................................................61
Airplane Mode ............................................................................................................61
Wi-Fi Direct.................................................................................................................62
Portable Wi-Fi Hotspot................................................................................................62
Bluetooth Tethering ....................................................................................................62
NFC............................................................................................................................62
Android Beam.............................................................................................................63
VPN Settings..............................................................................................................63
Mobile Networks Settings ...........................................................................................63
Call Settings ......................................................................................................................63
Quick Messages.........................................................................................................64
North American Dialing...............................................................................................64
International Dialing....................................................................................................64
TTY Mode...................................................................................................................64

TOC iv
Proximity Sensor ........................................................................................................65
Noise Reduction.........................................................................................................65
Voicemail Settings......................................................................................................66
Save Unknown Numbers............................................................................................66
Roaming Settings ..............................................................................................................66
Set Roam Mode..........................................................................................................67
Roaming Guard..........................................................................................................67
Data Roam Guard.......................................................................................................68
Device Settings..................................................................................................................68
Sound Settings...........................................................................................................69
Ringtone & Notifications..............................................................................................70
Touch Feedback & System.........................................................................................71
Display Settings..........................................................................................................72
Home Screen..............................................................................................................74
Lock Screen................................................................................................................76
Gestures.....................................................................................................................79
Storage.......................................................................................................................80
Power Saver...............................................................................................................80
Apps Settings .............................................................................................................81
Personal Settings...............................................................................................................82
Accounts & Sync ........................................................................................................82
Location Services .......................................................................................................82
Security ......................................................................................................................83
Language & Input Settings..........................................................................................84
Backup & Reset..........................................................................................................85
System Settings.................................................................................................................86
Date & time.................................................................................................................86
Accessibility................................................................................................................86
Connectivity................................................................................................................86
Developer Options......................................................................................................88
Update Your Phone....................................................................................................89
Display Your Phone Number ......................................................................................90
Contacts....................................................................................................................................91

TOC v
Get Started With Contacts .................................................................................................91
Add a Contact....................................................................................................................92
Add a Contact to Your Favorites........................................................................................93
Edit a Contacts Entry.........................................................................................................93
Communicate with Your Contacts......................................................................................97
Import, Export, and Share Contacts...................................................................................98
Accounts and Messaging........................................................................................................100
Gmail...............................................................................................................................100
Create a Google Account..........................................................................................100
Sign into Your Google Account.................................................................................101
Access Gmail............................................................................................................101
Send a Gmail Message ............................................................................................103
Read and Reply to Gmail Messages.........................................................................104
Change Gmail Settings.............................................................................................106
Email ...............................................................................................................................107
Add an Email Account (POP3 or IMAP)....................................................................108
Corporate Email (Outlook)........................................................................................109
Open Email...............................................................................................................110
Create and Send Email.............................................................................................111
Reply to or Delete an Email Message.......................................................................112
Configure and Sync Corporate Email Settings..........................................................112
Text and Multimedia Messaging.......................................................................................113
Compose Text Messages.........................................................................................114
Send a Multimedia Message (MMS).........................................................................114
Save and Resume a Draft Message .........................................................................116
Managing Message Conversations...........................................................................116
Delete Messages......................................................................................................117
Text and Multimedia Message Options.....................................................................118
Synchronize Accounts .....................................................................................................120
Synchronize Your Google Account...........................................................................120
Synchronize Your Corporate Account.......................................................................121
Apps and Entertainment..........................................................................................................123
Play Store™ ....................................................................................................................123

TOC vi
Google Wallet™...............................................................................................................124
Sprint Applications...........................................................................................................125
Sprint ID ...................................................................................................................126
Sprint Zone...............................................................................................................127
NASCAR Sprint Cup Mobile .....................................................................................127
NBA Game Time ......................................................................................................128
Sprint TV & Movies..........................................................................................................129
Music...............................................................................................................................130
Back Up Your Downloaded Music Files....................................................................131
Sprint Music Plus......................................................................................................131
YouTube™ ......................................................................................................................132
GPS Navigation...............................................................................................................132
Google Maps™.........................................................................................................132
Scout™ by Telenav ..................................................................................................135
Google Navigation....................................................................................................136
Web and Data.........................................................................................................................137
Connect Wi-Fi..................................................................................................................137
Turn Wi-Fi On and Connect to a Network.................................................................137
Add a Wi-Fi Network.................................................................................................138
Wi-Fi Direct...............................................................................................................139
Data Services ..................................................................................................................139
Your User Name.......................................................................................................140
Launch a Web Connection........................................................................................140
Data Connection Status and Indicators.....................................................................140
Virtual Private Networks (VPN)........................................................................................141
Prepare Your Phone for VPN Connection.................................................................141
Set Up Secure Credential Storage............................................................................141
Add a VPN Connection.............................................................................................141
Connect to or Disconnect From a VPN.....................................................................142
Browser ...........................................................................................................................142
Learn to Navigate the Browser .................................................................................143
Go to a Specific Website...........................................................................................144
Browser Menu ..........................................................................................................144

TOC vii
Adjust Browser Settings............................................................................................145
Create Website Settings...........................................................................................146
Create Bookmarks....................................................................................................146
Adjust Browser Privacy & Security Settings..............................................................147
Tethering and Portable Hotspot .......................................................................................148
Camera and Video..................................................................................................................149
Take Pictures...................................................................................................................149
Camera Settings.......................................................................................................150
View Your Pictures ...................................................................................................151
Gallery Options.........................................................................................................151
Assign Pictures.........................................................................................................152
Record Videos.................................................................................................................153
Video Settings ..........................................................................................................153
Video Gallery Options...............................................................................................154
Tools and Calendar.................................................................................................................155
QuickMemoTM ..................................................................................................................155
SmartShare .....................................................................................................................157
Calendar..........................................................................................................................158
Open the Calendar and Change View.......................................................................159
View Event Details....................................................................................................161
Create an Event........................................................................................................162
Edit or Delete an Event.............................................................................................162
Set an Event Reminder.............................................................................................163
Respond to an Event Reminder................................................................................163
Display and Synchronize Calendars .........................................................................164
Change Calendar Settings........................................................................................164
Folders.............................................................................................................................165
Alarm/Clock .....................................................................................................................165
Calculator ........................................................................................................................168
Bluetooth .........................................................................................................................168
Turn Bluetooth On and Off........................................................................................169
Bluetooth Settings Menu...........................................................................................169
Pairing Bluetooth Devices.........................................................................................170

TOC viii
Send Items via Bluetooth..........................................................................................171
Disconnect Bluetooth Connection During an Active Call...........................................172
microSD Card..................................................................................................................172
Remove the microSD Card.......................................................................................173
Insert the microSD Card ...........................................................................................173
microSD Icon Indicators............................................................................................173
microSD Adapter ......................................................................................................174
View Memory in the microSD Card...........................................................................174
Format the microSD Card.........................................................................................174
Connect Your Phone to Your Computer....................................................................175
Update Your Phone .........................................................................................................176
Index.......................................................................................................................................178