LG Nexus 4 User Manual

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When you’re ready to turn on encr yption:
1. To u c h  Settings > Personal > Security > 
Encryption > Encrypt phone.
2. Read the information about encr yption 
carefully. 
The  Encrypt phone  button is dimmed 
if your batter y’s not charged or your 
phone’s not plugged in. If you change 
your mind about encrypting your phone, 
touch the Back button.
WARNING:  If you interrupt the en ­
cr yption process, you will lose data.
3. To u c h   Encrypt phone .4. Enter your lock screen PIN or password 
and touch Continue .
5. To u c h  Encrypt phone  again.
The encr yption process star ts and displays 
its progress. Encr yption can take an hour or 
more, during which time your phone may re ­
star t several times. 
						

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When encr yption is complete, you’re prompt­
ed to enter your PIN or password.
Subsequently, you must enter your PIN or 
password each time you power on your 
phone, to decr ypt it.
Work with certificates
You  can  use  digital  cer tificates  to  identify 
your device for a variety of purposes, includ ­
ing VPN or Wi­Fi network access as well as authentication to ser vers by apps such as 
Email or Chrome. To use a cer tificate to iden ­
tify your device, you must obtain it with help 
from your system administrator, and install it 
in your device’s trusted credential storage .
Android suppor ts DER­en coded X.509 cer­
tificates,  saved  in  files  with  a  .cr t  or  .cer  file 
extension. If your cer tificate file has a .der or 
other extension, you must change it to .cr t or 
.cer or you won’t be able to install it.
Android  also  suppor ts  X.509  cer tificates  
						

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saved  in  PKCS#12  key  store  files  with  a  .p12 
or .pfx extension. If your key store has some 
other extension, you much change it to .p12 
or .pfx or you won’t be able to install it. When 
you  install  a  cer tificate  from  a  PKCS#12 
key store, Android also installs any accom­
panying  private  key  or  cer tificate  authority 
certificates.
Install client & CA certificates
To  install  a  cer tificate  from  your  phone’s  in ­
ternal storage:
1. Copy the cer tificate or key store from your 
computer to the root of your device’s in ­
ternal storage (that is, not in a folder). 
2. To u c h   Settings  > Personal > Secu -
rity > Credential storage > Install from 
storage.
3. Touch  the  filename  of  the  cer tificate 
or  keystore  to  install.  Only  cer tificates 
that you haven’t already installed are 
displayed. 
						

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4. If prompted, enter the key store password 
and touch OK.
5. Enter a name for the cer tificate and touch 
OK.
Typically, a CA cer tificate included with a cli ­
ent  cer tificate  is  installed  at  the  same  time. 
You can also install separate CA cer tificates 
using the same steps.
If you have not already set a pattern, PIN, or 
password for your device, you’re prompted 
to set one up. The type of lock that’s accept ­
able may be predetermined by your system 
administrator. 
You  can  now  use  the  cer tificate  that  you  in ­
stalled when connecting to a secure net ­
work or for client authentication with Email, 
Chrome, and third­pa r ty apps. After a cer­
tificate  is  installed  successfully,  the  copy  in 
storage is deleted. 
						

							SECURIT Y SETTINGS 206
IMPORTANT: Apps such as Email that 
suppor t  cer tificates  allow  you  to  in ­
stall  cer tificates  directly  from  within 
the app. For details, see the Help or 
other instructions that come with each 
app.
Work with CA certificates
If a cer tificate authority (CA) cer tificate gets 
compromised, or for some other reason your 
organization doesn’t want to trust it, you can 
disable or remove it. To do so, follow these 
steps:
1. To u c h    Settings  > Personal > Security 
> Credential storage >Trusted credentials.  
The trusted credentials screen has two 
tabs: 
System   displays  cer tificate  authority 
(CA)  cer tificates  that  are  permanently  in ­
stalled in the ROM of your phone.
User  displays any CA cer tificates that you  
						

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have installed yourself, for example in the 
process of installing a client cer tificate.
2. To  examine  the  details  of  CA  cer tificate, 
touch its name. 
A scrolling screen displays the details.
3. To  remove  or  disable  a  CA  cer tificate, 
scroll down to the bottom of the de­
tails screen and touch either Disable  for 
system  cer tificates  or  Remove for user 
certificates. 
When you disable a system CA cer tificate, 
the button at the bottom of its details 
screen changes to Enable , so you can 
enable  the  cer tificate  again  if  necessar y. 
When you remove a user­in stalled CA cer­
tificate,  it  is  gone  permanently  and  must 
be re­installed if you want it back.4. In  the  confirmation  dialog  that  appears, 
touch OK . 
						

							11
Personal, 
account, 
& system 
settings
Manage location access
You can let your phone access GPS, Wi­Fi networks, and mobile networks to estimate 
your location. Apps that have your permis­
sion can use this information to deliver lo ­
cation­based ser vices, such as the ability to check in, view commute traf fic, or find nearby 
restaurants.
PERSONAL, SETTINGS 208 
						

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For your phone
To control what location information your 
phone can use, go to Settings > Personal > 
Location access.
When the Access to my location switch at the 
top of the screen is On, you can select either 
or both of these checkboxes:
• GPS satellites.  Just like a GPS device in 
your car, lets your phone calculate your 
location based on satellite signals .
• Wi-Fi & mobile network location.  Lets 
your phone use Google’s location ser vice 
to help estimate your location faster, with 
or without help from GPS.
When the switch is Off,  your phone can’t find 
your precise location or share it with any 
apps. 
						

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IMPORTANT: Turning off location ac ­
cess for your phone also turns it off for 
Google Now, other Google apps, and 
non­Google apps. That means that no apps can receive your precise location 
information, and many useful features 
will be disabled.
For Google apps
When location access for your phone is 
turned on, you can prevent Google apps from 
using this information with one easy setting 
– without affecting access by non­Go ogle apps. To do so:
1. Go to Settings > Accounts > Google > Lo -
cation settings .
2. Slide the switch to the Off  position. 
						

							PERSONAL, SETTINGS 2 11
IMPORTANT: When you turn  Location 
settings off, non­Goo gle apps and Google’s location ser vice will continue 
to receive your location. To change 
these settings, go to Settings > Per -
sonal > Location access .
Change backup & reset options 
To view the settings described here, go to  Settings > Backup & reset .
You can back up settings and other data as ­
sociated with one or more of your Google Ac ­
counts. If you need to replace or factor y reset 
your device, you can restore your data for any 
accounts that were previously backed up.
These options are available:
• Back up my data. If you check this option, 
a wide variety of your personal data is 
backed up automatically, including your