Nokia E52

Page 149
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you can send the key to your computer. Enter a pass phrase for the key and a name for
the key file. The pass phrase should be long and complex.
Encrypt with restored key — Encrypt the memory card with a key you have received.
Select the key file, and enter the pass phrase.
Decrypt device memory or memory card
Always remember to decrypt the device memory and/or the memory card before
updating the device software.
To decrypt the device memory, select 
Phone memory
.
To decrypt the memory card without destroying the encryption key, select 
Memory
card
 > 
Decrypt
.
To decrypt the memory card and destroy the encryption key, select 
Memory card
 >
Decrypt and turn off encryption
.
Fixed dialling
Select 
Menu
 > 
Contacts
 and 
Options
 > 
SIM numbers
 > 
Fixed dial contacts
.
With the fixed dialling service, you can restrict calls from your device to certain phone
numbers. Not all SIM cards support the fixed dialling service. For more information,
contact your service provider.
When security features that restrict calls are in use (such as call barring, closed user
group, and fixed dialling), calls may be possible to the official emergency number
programmed into your device. Call barring and call diverting cannot be active at the
same time.
You need your PIN2 code to activate and deactivate fixed dialling or edit your fixed
dialling contacts. Contact your service provider for your PIN2 code.
Select 
Options
 and from the following:
Activate fixed dialling  — Activate the fixed dialing.
Deactivate fixed dialling  — Deactivate the fixed dialing.
New SIM contact  — Enter the contact name and phone number to which calls are
allowed.
Add from Contacts  — Copy a contact from the list of contacts to the fixed dialling list.
To send text messages to the SIM contacts while the fixed dialling service is active, you
need to add the text message centre number to the fixed dialling list.
Security and data management 149
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