Samsung Galaxy S4 User Manual

							115 Security 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
Security
 
Secure your device and protect 
your data with Security settings. 
Device Administration 
Manage your device administrators and application 
installation privileges. 
1.  From a Home screen, tap  Apps > 
Settings > MORE tab. 
2.	   Tap S

ecurit
y for options: 
• Device administrators: Add or remove device 
administrators. 
• Unknown sources: Enable installation of 
non- Google Play applications. 
Warning: Enabling installation of third-party 
applications can cause your device and personal data 
to be more vulnerable to attacks by unknown sources. 
Encryption 
Require a numeric PIN or password to decrypt your 
device each time you power it on or encrypt the 
data on a memory card (not included) each time it is 
connected. 
1.  From a Home screen, tap  Apps > 
Settings > MORE tab. 
 
2.	   Tap Securit

y for options: 
• Tap Encrypt device and follow the prompts to 
encrypt all data on your device. 
• Tap Encrypt external SD card to encrypt data 
on a memory card (not included) . 
Find My Mobile 
Protect your device from loss or theft allowing your 
device to be locked, tracked, and for your data to be 
deleted remotely. 
Note : You must sign up for a Samsung account 
and enable Google location service to use Remote 
controls. 
1.  From a Home screen, tap  Apps > 
Set
 tings > MORE tab. 
2.	  Tap Secur

ity for options: 
• Remote controls: Lock and erase your data 
remotely if your device is lost or stolen. 
• SIM change alert: Enter another phone 
number to receive an alert if your SIM card is 
changed. 
• Go to website: Direct link to the Find my 
Mobile website. 
• Reactivation lock: Use your Samsung 
account to prevent anyone from reactivating 
your device. 
SIM Card Lock 
Use this option to set up your password when one is 
�rst required or change your current password. 
3.  From a Home screen, tap  Apps > 
Settings > MORE tab. 
4.	   Tap Secur

ity > Set up SIM card lock and follow 
the prompts.  
Settings  
						

							116 Security 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
Passwords 
Display password characters brie�y as you type 
them. 
1.  From a Home screen, tap  Apps > 
Set
 tings > MORE tab. 
2.	  Tap Secur

ity > Make passwords visible to turn 
the feature on. 
Security Update Service 
Automatically receive security updates. 
1.  From a Home screen, tap  Apps > 
Set
 tings > MORE tab. 
2.	  Tap Secur

ity for options: 
• Security policy updates: Automatically or 
manually check for security policy updates. 
• Send security reports: Send security reports 
to Samsung via Wi-Fi for threat analysis. 
Credential Storage 
Manage your security certi�cates. If a certi�cate 
authority (CA) certi�cate gets compromised or 
for some other reason you do not trust it, you can 
disable or remove it. 
1.   From a Home screen, tap  Apps > 
Set
 tings > MORE tab. 
2.	  Tap Secur

ity for options: 
• Storage type: Select a storage location for 
credential contents. 
• Trusted credentials: Display certi�cates in 
your device’s ROM and other certi�cates you 
have installed. 
• Install from device storage: Install a new 
certi�cate from storage. 
• Clear credentials: Erase the credential 
contents from the device and reset the 
password. 
Advanced Security Settings 
Protect your device with these advanced security 
options. 
1.  From a Home screen, tap  Apps > 
Sett
 ings > MORE tab. 
2.	  Tap Secur

ity for options: 
• Trust agents: View or disable trusted agents. 
• Apps with access to usage data: View which 
applications can access your device’s usage 
history. 
• Smart Lock: Set your device to stay unlocked 
when you have trusted devices connected or 
when it is in a trusted place. 
Note : To view Trust agents or Smart Lock, set up a 
screen lock (pin, password, or pattern) . For more 
information, see Set a Screen Lock.  
Settings  
						

							117 Application Manager 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
Application Manager
 
You can download and install 
new applications on your device. 
Use Application manager 
settings to manage your 
downloaded and preloaded 
applications. 
Warning: Because this device can be con�gured 
with system software not provided by or supported 
by Google or any other company, you operate this 
software at your own risk. 
Memory Usage 
See how memory is being used by Downloaded or 
Running applications. 
1.	  From a Home screen, tap 
Apps >  Sett

ings > MORE tab > 
Application manager.



 
2.	  Swipe acros

s the screen to display 
DOWNLOADED, SD CARD, RUNNING, or ALL 
to display memory usage for that category of 
applications. If you have disabled applications, a 
TURNED OFF tab also displays. 
The graph on the RUNNING tab shows used and 
free RAM. 
Downloaded 
Displays apps you have downloaded onto your 
device. 
1.	  From a Home screen, tap 
Apps >  Sett

ings > MORE tab > 
Application manager.



 
2.	  Tap DOW

NLOADED to view a list of all the 
downloaded applications on your device. 
3.	  To switch the order of the DOWNLOADED list, 
tap 
Menu > Sort by size or  Sort by name. 
4. To reset all of y

our application preferences, tap 
Menu > Reset app preferences. 
5.	   Tap an applicat

ion to view and update 
information about the application, including 
memory usage, default settings, and permissions. 
The following options are displayed (not all 
applications support these options): 
• FORCE STOP: Stop an app that is 
misbehaving. Restart your device if stopping 
an app, process, or service causes your 
device to stop working correctly. 
• UNINSTALL/UNINSTALL UPDATES: Delete 
the application from the device or uninstall 
updates made to apps that cannot be deleted. 
• DISABLE: Disable apps that cannot be 

uninstalled.
 
• Show noti�cations: Tap the checkbox to 
enable or disable noti�cations from the app. 
Noti�cations appear in the Status Bar. 
• MOVE TO SD CARD: Move this app to your 
microSD card. 
• CLEAR DATA: Clear application data from 
memory. 
• CLEAR CACHE: Clear an application’s 

temporary memory storage.
  
Settings  
						

							118 Application Manager 
 
 
  
 
   
 
 
   
 
 
 
   
 
 
 
• CLEAR DEFAULTS: Clear an application’s 
customization. 
• Permissions: View information about the 
application’s access to your device and data. 
SD Card 
Displays apps you have downloaded onto your 
memory card (not included) . 
1.	  From a Home screen, tap 
Apps >  Sett

ings > MORE tab > 
Application manager.



 
2.	  Tap SD CAR

D to view a list of all the downloaded 
applications on your SD card. 
3.  To switch the order of the SD CARD list, tap 
Menu > Sort by size or  Sort by name. 
4. To reset y

our application preferences, tap 
Menu > Reset app preferences. 
Note : When you r

eset app preferences, you will not 
lose any app data. 
5.	   Tap an application to view and update 
information about the application, including 
memory usage, default settings, and permissions. 
Running Services 
View and control services running on your device. 
1.	  From a Home screen, tap 
Apps >  Sett

ings > MORE tab > 
Application manager.



 
2.	  Tap RUNNIN

G to view a list of running services. 
All the applications that are currently running on 
the device display. 
3.	  Tap SHOW CACHED PROCESSES to display 
all the cached processes that are running. Tap 
SHOW SERVICES IN USE to switch back. 
4.	  Tap one of the applications to view application 
information. 
• STOP : Stops the application from running 
on the device. This is usually done prior to 
uninstalling the application. (Not all services 
can be stopped. Stopping some services 
may have undesirable consequences on the 
application or Android System.) 
• REPORT: Report failure and other application 
information. 
Note : Options vary by application.  
Settings  
						

							119 Application Manager 
  
 
   
   
 
 
 
 
 
 
 
 
Turned O� 
View and con�gure disabled apps on your device. 
Note : This screen only displays if you have disabled 
an app on the Apps screen. 
1.	  From a Home screen, tap 
Apps >  Sett

ings > MORE tab > 
Application manager.



 
2.	  Tap DISA

BLED to view a list of applications you 
have disabled. 
3.	  To switch the order of the DISABLED list, tap 
MORE > Sort by size, or Sort by name. 
4.	  To reset all of your application preferences, tap 
MORE > Reset app preferences. 
5.	  Tap an application to view and update 
information about the application, including 
memory usage, default settings, and permissions. 
The following options are displayed: 
• FORCE STOP: Stop an app that is 
misbehaving. Restart your device if stopping 
an app, process, or service causes your 
device to stop working correctly. 
• ENABLE: This moves the application back to 
the Apps screen. 
• Show noti�cations: Tap the checkbox to 
enable or disable noti�cations from the app. 
Noti�cations display in the Status Bar. 
• MOVE TO SD CARD: Move this app to your 
microSD card. 
• CLEAR DATA: Clear application data from 
memory. 
• CLEAR CACHE: Clear an application’s 

temporary memory storage.
 
• CLEAR DEFAULTS: Clear an application’s 
customization. 
• Permissions: View information about the 
application’s access to your device and data. 
Note : Options vary by application.  
Settings  
						

							120 Default Applications 
  
 
 
 
Default Applications
 
If you have multiple applications 
of the same type, such as email 
apps, you can select one app to 
be the default. 
You can also use a simpler 
Home screen which provides 
an easier user experience for 
�rst-time smartphone users. 
1.	  From a Home screen, tap 
Apps >  Sett
ings > MORE tab > 
Default Applications.



 
2.	   Tap Home and select a Home scr

een mode: 
• TouchWiz easy home: Provides an easier user 
experience for the �rst-time smartphone users. 
• TouchWiz home: The Home screen that 

originally displays on your phone.
 
3.	   Tap Messages  and select a default messaging 
app.  
Settings  
						

							121 Battery 
  
   
   
Battery
 
View how battery power is used 
for device activities. 
1. From a Home screen, tap  Apps > 
Set tings > MORE tab. 
2.	  Tap Batt

ery for options: 
•   Show battery percentage: Tap to display the 
battery charge percentage next to the battery 
icon on the Status Bar. 
Battery Chart 
The battery level displays as a percentage. The 
amount of time the battery has been used also 
displays. 
►  	 Tap the Battery chart to view History details. 
Apps and OS Usage 
Battery usage displays in percentages per 
application. 
1.	  Tap Screen, Android System, Android OS, or 
an app to view how they are a�ecting battery 
use. 
2.  Tap  Refresh to update the listing. 
Note: Other applica

tions may be running that a�ect 
battery use.  
Settings  
						

							Storage
 
View the device memory and 
usage, or mount, unmount, or 
format an optional memory card 
(not included) . 
Device Memory 
View and manage the memory used by the device. 
1.  From a Home screen, tap  Apps > 
Settin
 gs > MORE tab. 
2.  Tap Storag

e. 
• The Device memory  displays Total space and 
Available space. 
• The amounts of memory used by Applications, 
Pictures and videos, Audio, Downloads, 
Cached data, and Miscellaneous �les are also 
displayed. 
To increase available memory: 
1.   Tap Cached data to clear all cached data for all 
apps. Tap OK to con�rm. 
2.  Tap Miscellaneous �les, select unnecessary 
�les or tap SELECT ALL, and then t

ap 
Delete .
 


Memory Card (SD Card) 
Once an optional memory card (not included) has 
been installed in your device, the card memory 
displays as Total space and Available space. 
Install a Memory Card 
You can use an optional microSD or microSDHC 
card (not included) to add additional memory space 
to your device. 
1. Remove the back cover. For more information, 
see Remove the Back Cover . 
2.  With the gold contacts facing down, carefully 
slide the memory card into the slot, pushing 
gently until it clicks into place. 
3.  Replace the back cover. For more information,  see Replace the Back Cover . 
122 Storage  
Settings  
						

							123 Storage 
  
 
 
 
 
 
 
 
 
   
 
   
 
 
 
Mount a Memory Card 
When you install an optional memory card, it is 
automatically mounted (connected to the device) 
and prepared for use. However, should you unmount 
the card without removing it from the device, you will 
need to mount it before it can be accessed. 
1.  From a Home screen, tap  Apps > 
Sett
 ings > MORE tab. 
2.	  Tap Stor

age  > Mount SD card. 
Unmount a Memory Card 
To prevent damage to information stored on the 
memory card, always unmount the card before 
removing it from the device. 
Unmounting an SD card may stop some applications 
from functioning until you mount the SD card again. 
1. From a Home screen, tap  Apps > 
Sett
 ings > MORE tab. 
2.	  Tap Stor

age  > Unmount SD card. 
Remove a Memory Card 
Warning: To prevent damage to information stored on 
the memory card, unmount the card before removing 
it from the device. 
1. From a Home screen, tap  Apps > 
Sett
 ings > MORE tab. 
2.	 Tap Stor

age  > Unmount SD card. 
3.	  Remove the back cover. For more information, 
see Remove the Back Cover . 
4.	  Gently press inward on the memory card so that 
it pops out from the slot and carefully pull the 
card out. 
5.	  Replace the back cover. For more information, 
see Replace the Back Cover . 
Format a Memory Card 
Warning: When formatting an SD card, you should 
back up your music and photo �les that are stored on 
the card because formatting the SD card deletes all 
the stored data. 
1. From a Home screen, tap  Apps > 
Sett
 ings > MORE tab. 
2.	  Tap Stor

age  > Format SD card and follow the 
prompts.  
Settings  
						

							124 Date and Time Settings 
  
 
   
Date and Time Settings
 
By default, your device receives 
date and time information from 
the wireless network. 
When you are outside network 
coverage, you may want to 
set date and time information 
manually using the date and time 
settings. 
1.  From a Home screen, tap  Apps > 
Set tings > MORE tab. 
2.	 Tap Dat

e and time. 
3.	  Set the date, time, time zone, time format, and 
date format.  
Settings