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Security and data management
Manage the data and software on your device, and take
care of the security of the device and its contents.
Important:  Your device can only support one
antivirus application. Having more than one
application with antivirus functionality could affect
performance and operation or cause the device to stop
functioning.
Lock the device
To prevent access to the contents of your device, lock
the device when in home screen. Press the power key,
select 
Lock phone
, and enter your lock code. The
default lock code is 12345. To unlock, press the left
selection key, enter your lock code, and press the scroll
key.
To change the lock code, select 
Menu
 > 
Tools
 >
Settings
 > 
General
 > 
Security
 > 
Phone and SIM
card
 > 
Lock code
. Enter the old code and then the
new code twice. The new code can be 4-255 characters
long. Both alphabets and digits can be used, and both
uppercase and lowercase alphabets are possible.
You can also lock the device remotely by sending a text
message to the device. To enable remote locking and
to define the text for the message, select 
Menu
 >
Tools
 > 
Settings
 > 
General
 > 
Security
 > 
Phone
and SIM card
 > 
Allow remote lock
 > 
Yes
. Enter the
remote lock message and confirm the message. The
message must be at least 5 characters long.
Memory
There are two types of memory into which you can save
data or install applications: device memory and
memory card.
Free memory
To see how much memory is currently in use, how
much free memory remains, and how much memory is
consumed by each data type, select 
Menu
 >
Options
 > 
Memory details
 > 
Phone memory
 or
Memory card
.
Tip: To ensure that you have adequate memory,
transfer data regularly to a memory card or
computer, or use File manager to delete files you
no longer need.
After you install applications to a compatible memory
card, installation files (.sis, .sisx) remain in the device
memory. The files may use large amounts of memory
and prevent you from storing other files. To maintain
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