LG Optimus L90 User manual

User Guide
ENGLISH
www.lg.com
MFL68941501 (1.0)

• Screen displays and illustrations may differ
from those you see on the actual phone.
• Some of the contents of this guide may
not apply to your phone, depending on
the software and your service provider. All
information in this document is subject to
change without notice.
• This handset is not suitable for people who
have a visual impairment due to the touch
screen keyboard.
• Copyright ©2015 LG Electronics, Inc. All rights
reserved. LG and the LG logo are registered
trademarks of LG Group and its related
entities. All other trademarks are the property
of their respective owners.
• Google™, Google Maps™, Gmail™, YouTube™,
Hangouts™ and Google Play™ are trademarks
of Google, Inc.
LG Optimus L90 User Guide
English

2
If you are a new T-Mobile® customer and your service has not been activated, simply
call Customer Care at 1-800-937-8997 from your landline phone and a T-Mobile
Activations representative will assist you. You will need the following information when
activating service:
• Service Agreement and agent code on your Agreement.
• Your name, home address, home phone, and billing address.
NOTE: For business and government accounts, please provide the name of
your company or government agency, address, and tax ID.
• Your Social Security number, current driver’s license number, and date of birth for
credit check purposes.
• Your choice of T-Mobile rate plan and services (see www.t-mobile.com for the latest
plan information).
• SIM serial number and IMEI number (located on the box bar code label).
By activating service, you acknowledge that you have read, understand, and agree to be
bound by each of T-Mobile’s Terms and Conditions and your Service Agreement.
About this user guide
Please read this user guide carefully before you use your phone and keep it handy for
future reference.
Should your phone fails to operate correctly, refer to the FAQ section.
• Some features and service may vary by area, phone, carrier, plan and version
of phone software.
• Screen displays and illustrations on this user manual may differ from those you see on
the actual phone.
• Designs and specifications of the phone and other accessories are subject to change
without any notice.
SERVICE ACTIVATION

3
Table of contents
SERVICE ACTIVATION......................2
Important notice ................................6
Getting to know your phone ........... 12
Phone overview......................................12
Installing the Micro SIM card and
battery ......................................................14
Charging your phone ...........................16
Inserting a microSD card.................... 17
Removing the microSD card..............18
Formatting the microSD card ............18
Locking and unlocking the screen ...19
Your Home screen ........................... 20
Touch Screen tips ................................20
Home screen..........................................21
Customizing the Home screen......21
Returning to recently-used
applications............................................22
Notifications...........................................22
Accessing notifications ...................23
Quick Settings...................................23
Notification icons on
the Status Bar....................................24
On-screen keyboard............................25
Entering special characters............26
Google account setup..................... 27
Connecting to Networks and Devices
28
Wi-Fi ........................................................28
Connecting to Wi-Fi networks.......28
Turning Wi-Fi on and connecting
to a Wi-Fi network ............................28
Bluetooth................................................28
USB tethering ........................................31
Smartphone Mobile Hotspots ...........31
Calls .................................................. 33
Making a call .........................................33
Calling your contacts...........................33
Answering and rejecting a call .........33
Adjusting the in-call volume.............34
Making a second call ..........................34
Ending a Call.........................................34
Ending a Call from the Status Bar...35
Viewing your call logs..........................35
Call settings...........................................35
Contacts ........................................... 36
Searching for a contact......................36
Adding a new contact.........................36
Favorite Contacts..................................36
Creating a group .................................. 37
Messaging ........................................ 38
Conversation view ................................38
Sending a message ............................38
Using smilies.........................................39
Changing your message settings....39
Email................................................. 40
Managing an email account..............40
Working with account folders............40
Composing and sending email.........41
Camera ............................................. 42
Getting to know the viewfinder.........42
Using the advanced settings ............43
Taking a quick photo ..........................44

4
Using Time catch shot mode ...........44
Once you've taken a photo................45
Viewing your saved photos ................46
Camcorder........................................ 47
Getting to know the viewfinder......... 47
Using the advanced settings ............48
Recording a quick video.....................48
After recording a video.......................49
Watching your saved videos..............49
Adjusting the volume
when viewing a video...........................49
Functions.......................................... 50
QuickMemo+.........................................50
Using the QuickMemo+ options ...51
Viewing the saved memo................51
QSlide .....................................................52
QuickRemote ........................................53
Using QuickRemote.........................54
QuickRemote options......................54
Multimedia ....................................... 55
Gallery .....................................................55
Viewing pictures ................................55
Zooming in and out .........................55
Playing videos....................................55
Viewing photo options.....................56
Deleting images and videos ..........56
Setting as wallpaper.........................56
Playing a video ..................................56
Music....................................................... 57
Add music files to your phone...... 57
Transfer music using
Media device (MTP)......................... 57
Playing a song ................................... 57
Utilities............................................. 60
Setting your alarm ...............................60
Using your calculator...........................60
Adding an event to your calendar ...60
Lookout Security ................................... 61
T-Mobile TV ...........................................62
T-Mobile Name ID ...............................62
Visual Voicemail....................................62
Voice Recorder......................................63
Recording a sound or voice...........63
Sending the voice recording..........63
ThinkFree Viewer ..................................64
LG Backup .............................................64
Backing up and restoring
smartphone data ..............................64
Copy & receive data.........................65
Backup.................................................65
File restore & management...........65
Google+ ..................................................66
Voice Search..........................................66
Downloads..............................................66
The Web ............................................67
Browser ................................................... 67
Using the Web toolbar .................... 67
Viewing webpages ............................ 67
Opening a page................................ 67
Searching the web by voice ...........68
Bookmarks..........................................68
History..................................................68
Chrome...................................................68
Viewing webpages ............................68
Opening a page................................69
Adding bookmarks........................... 69
Table of contents

5
Settings............................................ 70
Access the Settings menu ................ 70
Networks................................................. 70
Sound...................................................... 72
Display..................................................... 74
General ................................................... 76
Phone software update .................. 83
Phone software update ......................83
LG Mobile Phone Software update
via Over-the-Air (OTA)........................83
Trademarks ...................................... 85
Trademarks ............................................85
DivX Mobile ..........................................85
Dolby Digital Plus.................................85
Accessories .......................................87
Troubleshooting............................... 88
For Your Safety ................................ 92

6
Important notice
Before you start using the phone, please read this!
Please check to see if any problems you have encountered with your phone
are described in this section before taking the phone in for service or calling a
service representative.
1. Phone Memory
In order to make more memory available, you will have to manage your
applications and delete some data, such as applications or messages.
Managing applications
1 From the Home screen, tap Apps > Settings > General tab >Apps.
2 When the list of applications appears, scroll and tap the application you
want to disable.
3 Tap Uninstall and then tap OK to confirm that you want to uninstall the
desired application.
To stop applications
1 From the Home screen, tap Apps > Settings > General tab >Apps.
and select the RUNNING tab.
2 Select the desired application and tap Stop to stop it.
2. Optimizing Battery Life
You can extend your battery’s life between charges by turning off features that
you don’t need to run constantly in the background. You can also monitor how
applications and system resources consume battery power.
To extend the life of your battery
• Turn off radio communications that you aren’t using, such as Wi-Fi, Bluetooth,
or GPS.
• Lower screen brightness and set a shorter screen timeout.

7
• Turn off automatic syncing for Gmail™, Calendar, Contacts, and other
applications.
• Some applications you have downloaded may cause your battery power to be
reduced.
• While using downloaded applications, check the battery charged level.
To view the battery charge level
1 From the Home screen, tap Apps > Settings > General tab > About
phone > Battery.
2 The battery status (charging or discharging) and level are displayed on the
top menu of the screen.
To monitor and control what uses the battery
1 From the Home screen, tap Apps > Settings > General tab > About
phone > Battery > Battery usage.
2 The bottom of the screen displays battery usage time and also lists applications
or services using battery power from greatest amount to least.
3. Installing an Open Source Operating System
Installing an open source operating system on your phone and not using the
operating system provided by the manufacturer can cause your phone to
malfunction.
Warning!
• If you install and use an OS other than the one provided by the manufacturer, your
phone is no longer covered by the warranty.
• To protect your phone and personal data, download applications only from trusted
sources, such as Play Store. If some applications are not properly installed on your
phone, your phone may not work properly- or serious errors may occur. You will need
to uninstall those applications and all of its data and settings from the phone.

8
4. Using a screen lock
Set a screen lock to secure your phone from unauthorized use. To set the
screen lock, follow the process below.
From the Home screen, tap Apps > Settings > Display tab > Lock
screen > Select screen lock and select from None, Swipe, Knock Code, Pattern,
PIN or Password.
Warning! Take precautions when using an Unlock Pattern, PIN, or Password. It
is very important that you remember the screen unlock information you set. You
are allowed 5 attempts to enter your screen unlock information. If you used up
all 5 opportunities, you will have to wait 30 seconds to attempt unlocking the
phone again.
When you can’t recall your Unlock Pattern, PIN, or Password:
If you logged into a Google account on the phone and failed to use the correct
pattern 5 times, tap Forgot pattern? You will be required to sign in with your
Google account and prompted to create a new unlock pattern.
If you have set a backup PIN, you can unlock the screen by entering the
backup PIN.
If you haven’t created a Google account on the phone or you forgot your PIN or
Password, you need to perform a hard reset.
5. Using Hard Reset (Factory Reset)
If your phone needs to be restored to its original condition, use a Hard Reset to
initialize your phone.
Warning! If you perform a Hard Reset, all user applications and user data will be
deleted. Please remember to back up any important data before performing a
Hard Reset.
Important notice